Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1 | /*************************************************************************** |
| 2 | * V4L2 driver for ET61X[12]51 PC Camera Controllers * |
| 3 | * * |
| 4 | * Copyright (C) 2006 by Luca Risolia <luca.risolia@studio.unibo.it> * |
| 5 | * * |
| 6 | * This program is free software; you can redistribute it and/or modify * |
| 7 | * it under the terms of the GNU General Public License as published by * |
| 8 | * the Free Software Foundation; either version 2 of the License, or * |
| 9 | * (at your option) any later version. * |
| 10 | * * |
| 11 | * This program is distributed in the hope that it will be useful, * |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 14 | * GNU General Public License for more details. * |
| 15 | * * |
| 16 | * You should have received a copy of the GNU General Public License * |
| 17 | * along with this program; if not, write to the Free Software * |
| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * |
| 19 | ***************************************************************************/ |
| 20 | |
| 21 | #include <linux/module.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/param.h> |
| 25 | #include <linux/moduleparam.h> |
| 26 | #include <linux/errno.h> |
| 27 | #include <linux/slab.h> |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 28 | #include <linux/device.h> |
| 29 | #include <linux/fs.h> |
| 30 | #include <linux/delay.h> |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 31 | #include <linux/compiler.h> |
| 32 | #include <linux/ioctl.h> |
| 33 | #include <linux/poll.h> |
| 34 | #include <linux/stat.h> |
| 35 | #include <linux/mm.h> |
| 36 | #include <linux/vmalloc.h> |
| 37 | #include <linux/page-flags.h> |
| 38 | #include <linux/byteorder/generic.h> |
| 39 | #include <asm/page.h> |
| 40 | #include <asm/uaccess.h> |
| 41 | |
| 42 | #include "et61x251.h" |
| 43 | |
| 44 | /*****************************************************************************/ |
| 45 | |
| 46 | #define ET61X251_MODULE_NAME "V4L2 driver for ET61X[12]51 " \ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 47 | "PC Camera Controllers" |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 48 | #define ET61X251_MODULE_AUTHOR "(C) 2006 Luca Risolia" |
| 49 | #define ET61X251_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>" |
| 50 | #define ET61X251_MODULE_LICENSE "GPL" |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 51 | #define ET61X251_MODULE_VERSION "1:1.02" |
| 52 | #define ET61X251_MODULE_VERSION_CODE KERNEL_VERSION(1, 0, 2) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 53 | |
| 54 | /*****************************************************************************/ |
| 55 | |
| 56 | MODULE_DEVICE_TABLE(usb, et61x251_id_table); |
| 57 | |
| 58 | MODULE_AUTHOR(ET61X251_MODULE_AUTHOR " " ET61X251_AUTHOR_EMAIL); |
| 59 | MODULE_DESCRIPTION(ET61X251_MODULE_NAME); |
| 60 | MODULE_VERSION(ET61X251_MODULE_VERSION); |
| 61 | MODULE_LICENSE(ET61X251_MODULE_LICENSE); |
| 62 | |
| 63 | static short video_nr[] = {[0 ... ET61X251_MAX_DEVICES-1] = -1}; |
| 64 | module_param_array(video_nr, short, NULL, 0444); |
| 65 | MODULE_PARM_DESC(video_nr, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 66 | "\n<-1|n[,...]> Specify V4L2 minor mode number." |
| 67 | "\n -1 = use next available (default)" |
| 68 | "\n n = use minor number n (integer >= 0)" |
| 69 | "\nYou can specify up to " |
| 70 | __MODULE_STRING(ET61X251_MAX_DEVICES) " cameras this way." |
| 71 | "\nFor example:" |
| 72 | "\nvideo_nr=-1,2,-1 would assign minor number 2 to" |
| 73 | "\nthe second registered camera and use auto for the first" |
| 74 | "\none and for every other camera." |
| 75 | "\n"); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 76 | |
| 77 | static short force_munmap[] = {[0 ... ET61X251_MAX_DEVICES-1] = |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 78 | ET61X251_FORCE_MUNMAP}; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 79 | module_param_array(force_munmap, bool, NULL, 0444); |
| 80 | MODULE_PARM_DESC(force_munmap, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 81 | "\n<0|1[,...]> Force the application to unmap previously" |
| 82 | "\nmapped buffer memory before calling any VIDIOC_S_CROP or" |
| 83 | "\nVIDIOC_S_FMT ioctl's. Not all the applications support" |
| 84 | "\nthis feature. This parameter is specific for each" |
| 85 | "\ndetected camera." |
| 86 | "\n 0 = do not force memory unmapping" |
| 87 | "\n 1 = force memory unmapping (save memory)" |
| 88 | "\nDefault value is "__MODULE_STRING(SN9C102_FORCE_MUNMAP)"." |
| 89 | "\n"); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 90 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 91 | static unsigned int frame_timeout[] = {[0 ... ET61X251_MAX_DEVICES-1] = |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 92 | ET61X251_FRAME_TIMEOUT}; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 93 | module_param_array(frame_timeout, uint, NULL, 0644); |
| 94 | MODULE_PARM_DESC(frame_timeout, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 95 | "\n<n[,...]> Timeout for a video frame in seconds." |
| 96 | "\nThis parameter is specific for each detected camera." |
| 97 | "\nDefault value is " |
| 98 | __MODULE_STRING(ET61X251_FRAME_TIMEOUT)"." |
| 99 | "\n"); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 100 | |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 101 | #ifdef ET61X251_DEBUG |
| 102 | static unsigned short debug = ET61X251_DEBUG_LEVEL; |
| 103 | module_param(debug, ushort, 0644); |
| 104 | MODULE_PARM_DESC(debug, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 105 | "\n<n> Debugging information level, from 0 to 3:" |
| 106 | "\n0 = none (use carefully)" |
| 107 | "\n1 = critical errors" |
| 108 | "\n2 = significant informations" |
| 109 | "\n3 = more verbose messages" |
| 110 | "\nLevel 3 is useful for testing only, when only " |
| 111 | "one device is used." |
| 112 | "\nDefault value is "__MODULE_STRING(ET61X251_DEBUG_LEVEL)"." |
| 113 | "\n"); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 114 | #endif |
| 115 | |
| 116 | /*****************************************************************************/ |
| 117 | |
| 118 | static u32 |
| 119 | et61x251_request_buffers(struct et61x251_device* cam, u32 count, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 120 | enum et61x251_io_method io) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 121 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 122 | struct v4l2_pix_format* p = &(cam->sensor.pix_format); |
| 123 | struct v4l2_rect* r = &(cam->sensor.cropcap.bounds); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 124 | const size_t imagesize = cam->module_param.force_munmap || |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 125 | io == IO_READ ? |
| 126 | (p->width * p->height * p->priv) / 8 : |
| 127 | (r->width * r->height * p->priv) / 8; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 128 | void* buff = NULL; |
| 129 | u32 i; |
| 130 | |
| 131 | if (count > ET61X251_MAX_FRAMES) |
| 132 | count = ET61X251_MAX_FRAMES; |
| 133 | |
| 134 | cam->nbuffers = count; |
| 135 | while (cam->nbuffers > 0) { |
| 136 | if ((buff = vmalloc_32(cam->nbuffers * PAGE_ALIGN(imagesize)))) |
| 137 | break; |
| 138 | cam->nbuffers--; |
| 139 | } |
| 140 | |
| 141 | for (i = 0; i < cam->nbuffers; i++) { |
| 142 | cam->frame[i].bufmem = buff + i*PAGE_ALIGN(imagesize); |
| 143 | cam->frame[i].buf.index = i; |
| 144 | cam->frame[i].buf.m.offset = i*PAGE_ALIGN(imagesize); |
| 145 | cam->frame[i].buf.length = imagesize; |
| 146 | cam->frame[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 147 | cam->frame[i].buf.sequence = 0; |
| 148 | cam->frame[i].buf.field = V4L2_FIELD_NONE; |
| 149 | cam->frame[i].buf.memory = V4L2_MEMORY_MMAP; |
| 150 | cam->frame[i].buf.flags = 0; |
| 151 | } |
| 152 | |
| 153 | return cam->nbuffers; |
| 154 | } |
| 155 | |
| 156 | |
| 157 | static void et61x251_release_buffers(struct et61x251_device* cam) |
| 158 | { |
| 159 | if (cam->nbuffers) { |
| 160 | vfree(cam->frame[0].bufmem); |
| 161 | cam->nbuffers = 0; |
| 162 | } |
| 163 | cam->frame_current = NULL; |
| 164 | } |
| 165 | |
| 166 | |
| 167 | static void et61x251_empty_framequeues(struct et61x251_device* cam) |
| 168 | { |
| 169 | u32 i; |
| 170 | |
| 171 | INIT_LIST_HEAD(&cam->inqueue); |
| 172 | INIT_LIST_HEAD(&cam->outqueue); |
| 173 | |
| 174 | for (i = 0; i < ET61X251_MAX_FRAMES; i++) { |
| 175 | cam->frame[i].state = F_UNUSED; |
| 176 | cam->frame[i].buf.bytesused = 0; |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | |
| 181 | static void et61x251_requeue_outqueue(struct et61x251_device* cam) |
| 182 | { |
| 183 | struct et61x251_frame_t *i; |
| 184 | |
| 185 | list_for_each_entry(i, &cam->outqueue, frame) { |
| 186 | i->state = F_QUEUED; |
| 187 | list_add(&i->frame, &cam->inqueue); |
| 188 | } |
| 189 | |
| 190 | INIT_LIST_HEAD(&cam->outqueue); |
| 191 | } |
| 192 | |
| 193 | |
| 194 | static void et61x251_queue_unusedframes(struct et61x251_device* cam) |
| 195 | { |
| 196 | unsigned long lock_flags; |
| 197 | u32 i; |
| 198 | |
| 199 | for (i = 0; i < cam->nbuffers; i++) |
| 200 | if (cam->frame[i].state == F_UNUSED) { |
| 201 | cam->frame[i].state = F_QUEUED; |
| 202 | spin_lock_irqsave(&cam->queue_lock, lock_flags); |
| 203 | list_add_tail(&cam->frame[i].frame, &cam->inqueue); |
| 204 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | /*****************************************************************************/ |
| 209 | |
| 210 | int et61x251_write_reg(struct et61x251_device* cam, u8 value, u16 index) |
| 211 | { |
| 212 | struct usb_device* udev = cam->usbdev; |
| 213 | u8* buff = cam->control_buffer; |
| 214 | int res; |
| 215 | |
| 216 | *buff = value; |
| 217 | |
| 218 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 219 | 0, index, buff, 1, ET61X251_CTRL_TIMEOUT); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 220 | if (res < 0) { |
| 221 | DBG(3, "Failed to write a register (value 0x%02X, index " |
| 222 | "0x%02X, error %d)", value, index, res); |
| 223 | return -1; |
| 224 | } |
| 225 | |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | |
| 230 | int et61x251_read_reg(struct et61x251_device* cam, u16 index) |
| 231 | { |
| 232 | struct usb_device* udev = cam->usbdev; |
| 233 | u8* buff = cam->control_buffer; |
| 234 | int res; |
| 235 | |
| 236 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 237 | 0, index, buff, 1, ET61X251_CTRL_TIMEOUT); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 238 | if (res < 0) |
| 239 | DBG(3, "Failed to read a register (index 0x%02X, error %d)", |
| 240 | index, res); |
| 241 | |
| 242 | return (res >= 0) ? (int)(*buff) : -1; |
| 243 | } |
| 244 | |
| 245 | |
| 246 | static int |
| 247 | et61x251_i2c_wait(struct et61x251_device* cam, struct et61x251_sensor* sensor) |
| 248 | { |
| 249 | int i, r; |
| 250 | |
| 251 | for (i = 1; i <= 8; i++) { |
| 252 | if (sensor->interface == ET61X251_I2C_3WIRES) { |
| 253 | r = et61x251_read_reg(cam, 0x8e); |
| 254 | if (!(r & 0x02) && (r >= 0)) |
| 255 | return 0; |
| 256 | } else { |
| 257 | r = et61x251_read_reg(cam, 0x8b); |
| 258 | if (!(r & 0x01) && (r >= 0)) |
| 259 | return 0; |
| 260 | } |
| 261 | if (r < 0) |
| 262 | return -EIO; |
| 263 | udelay(8*8); /* minimum for sensors at 400kHz */ |
| 264 | } |
| 265 | |
| 266 | return -EBUSY; |
| 267 | } |
| 268 | |
| 269 | |
| 270 | int |
| 271 | et61x251_i2c_try_read(struct et61x251_device* cam, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 272 | struct et61x251_sensor* sensor, u8 address) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 273 | { |
| 274 | struct usb_device* udev = cam->usbdev; |
| 275 | u8* data = cam->control_buffer; |
| 276 | int err = 0, res; |
| 277 | |
| 278 | data[0] = address; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 279 | data[1] = cam->sensor.i2c_slave_id; |
| 280 | data[2] = cam->sensor.rsta | 0x10; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 281 | data[3] = !(et61x251_read_reg(cam, 0x8b) & 0x02); |
| 282 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 283 | 0, 0x88, data, 4, ET61X251_CTRL_TIMEOUT); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 284 | if (res < 0) |
| 285 | err += res; |
| 286 | |
| 287 | err += et61x251_i2c_wait(cam, sensor); |
| 288 | |
| 289 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 290 | 0, 0x80, data, 8, ET61X251_CTRL_TIMEOUT); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 291 | if (res < 0) |
| 292 | err += res; |
| 293 | |
| 294 | if (err) |
| 295 | DBG(3, "I2C read failed for %s image sensor", sensor->name); |
| 296 | |
| 297 | PDBGG("I2C read: address 0x%02X, value: 0x%02X", address, data[0]); |
| 298 | |
| 299 | return err ? -1 : (int)data[0]; |
| 300 | } |
| 301 | |
| 302 | |
| 303 | int |
| 304 | et61x251_i2c_try_write(struct et61x251_device* cam, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 305 | struct et61x251_sensor* sensor, u8 address, u8 value) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 306 | { |
| 307 | struct usb_device* udev = cam->usbdev; |
| 308 | u8* data = cam->control_buffer; |
| 309 | int err = 0, res; |
| 310 | |
| 311 | data[0] = address; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 312 | data[1] = cam->sensor.i2c_slave_id; |
| 313 | data[2] = cam->sensor.rsta | 0x12; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 314 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 315 | 0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 316 | if (res < 0) |
| 317 | err += res; |
| 318 | |
| 319 | data[0] = value; |
| 320 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 321 | 0, 0x80, data, 1, ET61X251_CTRL_TIMEOUT); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 322 | if (res < 0) |
| 323 | err += res; |
| 324 | |
| 325 | err += et61x251_i2c_wait(cam, sensor); |
| 326 | |
| 327 | if (err) |
| 328 | DBG(3, "I2C write failed for %s image sensor", sensor->name); |
| 329 | |
| 330 | PDBGG("I2C write: address 0x%02X, value: 0x%02X", address, value); |
| 331 | |
| 332 | return err ? -1 : 0; |
| 333 | } |
| 334 | |
| 335 | |
| 336 | int |
| 337 | et61x251_i2c_raw_write(struct et61x251_device* cam, u8 n, u8 data1, u8 data2, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 338 | u8 data3, u8 data4, u8 data5, u8 data6, u8 data7, |
| 339 | u8 data8, u8 address) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 340 | { |
| 341 | struct usb_device* udev = cam->usbdev; |
| 342 | u8* data = cam->control_buffer; |
| 343 | int err = 0, res; |
| 344 | |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 345 | data[0] = data2; |
| 346 | data[1] = data3; |
| 347 | data[2] = data4; |
| 348 | data[3] = data5; |
| 349 | data[4] = data6; |
| 350 | data[5] = data7; |
| 351 | data[6] = data8; |
| 352 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 353 | 0, 0x81, data, n-1, ET61X251_CTRL_TIMEOUT); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 354 | if (res < 0) |
| 355 | err += res; |
| 356 | |
| 357 | data[0] = address; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 358 | data[1] = cam->sensor.i2c_slave_id; |
| 359 | data[2] = cam->sensor.rsta | 0x02 | (n << 4); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 360 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 361 | 0, 0x88, data, 3, ET61X251_CTRL_TIMEOUT); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 362 | if (res < 0) |
| 363 | err += res; |
| 364 | |
| 365 | /* Start writing through the serial interface */ |
| 366 | data[0] = data1; |
| 367 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x41, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 368 | 0, 0x80, data, 1, ET61X251_CTRL_TIMEOUT); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 369 | if (res < 0) |
| 370 | err += res; |
| 371 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 372 | err += et61x251_i2c_wait(cam, &cam->sensor); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 373 | |
| 374 | if (err) |
| 375 | DBG(3, "I2C raw write failed for %s image sensor", |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 376 | cam->sensor.name); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 377 | |
| 378 | PDBGG("I2C raw write: %u bytes, address = 0x%02X, data1 = 0x%02X, " |
| 379 | "data2 = 0x%02X, data3 = 0x%02X, data4 = 0x%02X, data5 = 0x%02X," |
| 380 | " data6 = 0x%02X, data7 = 0x%02X, data8 = 0x%02X", n, address, |
| 381 | data1, data2, data3, data4, data5, data6, data7, data8); |
| 382 | |
| 383 | return err ? -1 : 0; |
| 384 | |
| 385 | } |
| 386 | |
| 387 | |
| 388 | int et61x251_i2c_read(struct et61x251_device* cam, u8 address) |
| 389 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 390 | return et61x251_i2c_try_read(cam, &cam->sensor, address); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | |
| 394 | int et61x251_i2c_write(struct et61x251_device* cam, u8 address, u8 value) |
| 395 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 396 | return et61x251_i2c_try_write(cam, &cam->sensor, address, value); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 397 | } |
| 398 | |
| 399 | /*****************************************************************************/ |
| 400 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame^] | 401 | static void et61x251_urb_complete(struct urb *urb) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 402 | { |
| 403 | struct et61x251_device* cam = urb->context; |
| 404 | struct et61x251_frame_t** f; |
| 405 | size_t imagesize; |
| 406 | u8 i; |
| 407 | int err = 0; |
| 408 | |
| 409 | if (urb->status == -ENOENT) |
| 410 | return; |
| 411 | |
| 412 | f = &cam->frame_current; |
| 413 | |
| 414 | if (cam->stream == STREAM_INTERRUPT) { |
| 415 | cam->stream = STREAM_OFF; |
| 416 | if ((*f)) |
| 417 | (*f)->state = F_QUEUED; |
| 418 | DBG(3, "Stream interrupted"); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 419 | wake_up(&cam->wait_stream); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | if (cam->state & DEV_DISCONNECTED) |
| 423 | return; |
| 424 | |
| 425 | if (cam->state & DEV_MISCONFIGURED) { |
| 426 | wake_up_interruptible(&cam->wait_frame); |
| 427 | return; |
| 428 | } |
| 429 | |
| 430 | if (cam->stream == STREAM_OFF || list_empty(&cam->inqueue)) |
| 431 | goto resubmit_urb; |
| 432 | |
| 433 | if (!(*f)) |
| 434 | (*f) = list_entry(cam->inqueue.next, struct et61x251_frame_t, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 435 | frame); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 436 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 437 | imagesize = (cam->sensor.pix_format.width * |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 438 | cam->sensor.pix_format.height * |
| 439 | cam->sensor.pix_format.priv) / 8; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 440 | |
| 441 | for (i = 0; i < urb->number_of_packets; i++) { |
| 442 | unsigned int len, status; |
| 443 | void *pos; |
| 444 | u8* b1, * b2, sof; |
| 445 | const u8 VOID_BYTES = 6; |
| 446 | size_t imglen; |
| 447 | |
| 448 | len = urb->iso_frame_desc[i].actual_length; |
| 449 | status = urb->iso_frame_desc[i].status; |
| 450 | pos = urb->iso_frame_desc[i].offset + urb->transfer_buffer; |
| 451 | |
| 452 | if (status) { |
| 453 | DBG(3, "Error in isochronous frame"); |
| 454 | (*f)->state = F_ERROR; |
| 455 | continue; |
| 456 | } |
| 457 | |
| 458 | b1 = pos++; |
| 459 | b2 = pos++; |
| 460 | sof = ((*b1 & 0x3f) == 63); |
| 461 | imglen = ((*b1 & 0xc0) << 2) | *b2; |
| 462 | |
| 463 | PDBGG("Isochrnous frame: length %u, #%u i, image length %zu", |
| 464 | len, i, imglen); |
| 465 | |
| 466 | if ((*f)->state == F_QUEUED || (*f)->state == F_ERROR) |
| 467 | start_of_frame: |
| 468 | if (sof) { |
| 469 | (*f)->state = F_GRABBING; |
| 470 | (*f)->buf.bytesused = 0; |
| 471 | do_gettimeofday(&(*f)->buf.timestamp); |
| 472 | pos += 22; |
| 473 | DBG(3, "SOF detected: new video frame"); |
| 474 | } |
| 475 | |
| 476 | if ((*f)->state == F_GRABBING) { |
| 477 | if (sof && (*f)->buf.bytesused) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 478 | if (cam->sensor.pix_format.pixelformat == |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 479 | V4L2_PIX_FMT_ET61X251) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 480 | goto end_of_frame; |
| 481 | else { |
| 482 | DBG(3, "Not expected SOF detected " |
| 483 | "after %lu bytes", |
| 484 | (unsigned long)(*f)->buf.bytesused); |
| 485 | (*f)->state = F_ERROR; |
| 486 | continue; |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | if ((*f)->buf.bytesused + imglen > imagesize) { |
| 491 | DBG(3, "Video frame size exceeded"); |
| 492 | (*f)->state = F_ERROR; |
| 493 | continue; |
| 494 | } |
| 495 | |
| 496 | pos += VOID_BYTES; |
| 497 | |
| 498 | memcpy((*f)->bufmem+(*f)->buf.bytesused, pos, imglen); |
| 499 | (*f)->buf.bytesused += imglen; |
| 500 | |
| 501 | if ((*f)->buf.bytesused == imagesize) { |
| 502 | u32 b; |
| 503 | end_of_frame: |
| 504 | b = (*f)->buf.bytesused; |
| 505 | (*f)->state = F_DONE; |
| 506 | (*f)->buf.sequence= ++cam->frame_count; |
| 507 | spin_lock(&cam->queue_lock); |
| 508 | list_move_tail(&(*f)->frame, &cam->outqueue); |
| 509 | if (!list_empty(&cam->inqueue)) |
| 510 | (*f) = list_entry(cam->inqueue.next, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 511 | struct et61x251_frame_t, |
| 512 | frame); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 513 | else |
| 514 | (*f) = NULL; |
| 515 | spin_unlock(&cam->queue_lock); |
| 516 | DBG(3, "Video frame captured: : %lu bytes", |
| 517 | (unsigned long)(b)); |
| 518 | |
| 519 | if (!(*f)) |
| 520 | goto resubmit_urb; |
| 521 | |
| 522 | if (sof && |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 523 | cam->sensor.pix_format.pixelformat == |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 524 | V4L2_PIX_FMT_ET61X251) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 525 | goto start_of_frame; |
| 526 | } |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | resubmit_urb: |
| 531 | urb->dev = cam->usbdev; |
| 532 | err = usb_submit_urb(urb, GFP_ATOMIC); |
| 533 | if (err < 0 && err != -EPERM) { |
| 534 | cam->state |= DEV_MISCONFIGURED; |
| 535 | DBG(1, "usb_submit_urb() failed"); |
| 536 | } |
| 537 | |
| 538 | wake_up_interruptible(&cam->wait_frame); |
| 539 | } |
| 540 | |
| 541 | |
| 542 | static int et61x251_start_transfer(struct et61x251_device* cam) |
| 543 | { |
| 544 | struct usb_device *udev = cam->usbdev; |
| 545 | struct urb* urb; |
| 546 | const unsigned int wMaxPacketSize[] = {0, 256, 384, 512, 640, 768, 832, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 547 | 864, 896, 920, 956, 980, 1000, |
| 548 | 1022}; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 549 | const unsigned int psz = wMaxPacketSize[ET61X251_ALTERNATE_SETTING]; |
| 550 | s8 i, j; |
| 551 | int err = 0; |
| 552 | |
| 553 | for (i = 0; i < ET61X251_URBS; i++) { |
| 554 | cam->transfer_buffer[i] = kzalloc(ET61X251_ISO_PACKETS * psz, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 555 | GFP_KERNEL); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 556 | if (!cam->transfer_buffer[i]) { |
| 557 | err = -ENOMEM; |
| 558 | DBG(1, "Not enough memory"); |
| 559 | goto free_buffers; |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | for (i = 0; i < ET61X251_URBS; i++) { |
| 564 | urb = usb_alloc_urb(ET61X251_ISO_PACKETS, GFP_KERNEL); |
| 565 | cam->urb[i] = urb; |
| 566 | if (!urb) { |
| 567 | err = -ENOMEM; |
| 568 | DBG(1, "usb_alloc_urb() failed"); |
| 569 | goto free_urbs; |
| 570 | } |
| 571 | urb->dev = udev; |
| 572 | urb->context = cam; |
| 573 | urb->pipe = usb_rcvisocpipe(udev, 1); |
| 574 | urb->transfer_flags = URB_ISO_ASAP; |
| 575 | urb->number_of_packets = ET61X251_ISO_PACKETS; |
| 576 | urb->complete = et61x251_urb_complete; |
| 577 | urb->transfer_buffer = cam->transfer_buffer[i]; |
| 578 | urb->transfer_buffer_length = psz * ET61X251_ISO_PACKETS; |
| 579 | urb->interval = 1; |
| 580 | for (j = 0; j < ET61X251_ISO_PACKETS; j++) { |
| 581 | urb->iso_frame_desc[j].offset = psz * j; |
| 582 | urb->iso_frame_desc[j].length = psz; |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | err = et61x251_write_reg(cam, 0x01, 0x03); |
| 587 | err = et61x251_write_reg(cam, 0x00, 0x03); |
| 588 | err = et61x251_write_reg(cam, 0x08, 0x03); |
| 589 | if (err) { |
| 590 | err = -EIO; |
| 591 | DBG(1, "I/O hardware error"); |
| 592 | goto free_urbs; |
| 593 | } |
| 594 | |
| 595 | err = usb_set_interface(udev, 0, ET61X251_ALTERNATE_SETTING); |
| 596 | if (err) { |
| 597 | DBG(1, "usb_set_interface() failed"); |
| 598 | goto free_urbs; |
| 599 | } |
| 600 | |
| 601 | cam->frame_current = NULL; |
| 602 | |
| 603 | for (i = 0; i < ET61X251_URBS; i++) { |
| 604 | err = usb_submit_urb(cam->urb[i], GFP_KERNEL); |
| 605 | if (err) { |
| 606 | for (j = i-1; j >= 0; j--) |
| 607 | usb_kill_urb(cam->urb[j]); |
| 608 | DBG(1, "usb_submit_urb() failed, error %d", err); |
| 609 | goto free_urbs; |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | return 0; |
| 614 | |
| 615 | free_urbs: |
| 616 | for (i = 0; (i < ET61X251_URBS) && cam->urb[i]; i++) |
| 617 | usb_free_urb(cam->urb[i]); |
| 618 | |
| 619 | free_buffers: |
| 620 | for (i = 0; (i < ET61X251_URBS) && cam->transfer_buffer[i]; i++) |
| 621 | kfree(cam->transfer_buffer[i]); |
| 622 | |
| 623 | return err; |
| 624 | } |
| 625 | |
| 626 | |
| 627 | static int et61x251_stop_transfer(struct et61x251_device* cam) |
| 628 | { |
| 629 | struct usb_device *udev = cam->usbdev; |
| 630 | s8 i; |
| 631 | int err = 0; |
| 632 | |
| 633 | if (cam->state & DEV_DISCONNECTED) |
| 634 | return 0; |
| 635 | |
| 636 | for (i = ET61X251_URBS-1; i >= 0; i--) { |
| 637 | usb_kill_urb(cam->urb[i]); |
| 638 | usb_free_urb(cam->urb[i]); |
| 639 | kfree(cam->transfer_buffer[i]); |
| 640 | } |
| 641 | |
| 642 | err = usb_set_interface(udev, 0, 0); /* 0 Mb/s */ |
| 643 | if (err) |
| 644 | DBG(3, "usb_set_interface() failed"); |
| 645 | |
| 646 | return err; |
| 647 | } |
| 648 | |
| 649 | |
| 650 | static int et61x251_stream_interrupt(struct et61x251_device* cam) |
| 651 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 652 | long timeout; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 653 | |
| 654 | cam->stream = STREAM_INTERRUPT; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 655 | timeout = wait_event_timeout(cam->wait_stream, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 656 | (cam->stream == STREAM_OFF) || |
| 657 | (cam->state & DEV_DISCONNECTED), |
| 658 | ET61X251_URB_TIMEOUT); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 659 | if (cam->state & DEV_DISCONNECTED) |
| 660 | return -ENODEV; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 661 | else if (cam->stream != STREAM_OFF) { |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 662 | cam->state |= DEV_MISCONFIGURED; |
| 663 | DBG(1, "URB timeout reached. The camera is misconfigured. To " |
| 664 | "use it, close and open /dev/video%d again.", |
| 665 | cam->v4ldev->minor); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 666 | return -EIO; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 667 | } |
| 668 | |
| 669 | return 0; |
| 670 | } |
| 671 | |
| 672 | /*****************************************************************************/ |
| 673 | |
| 674 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 675 | static u8 et61x251_strtou8(const char* buff, size_t len, ssize_t* count) |
| 676 | { |
| 677 | char str[5]; |
| 678 | char* endp; |
| 679 | unsigned long val; |
| 680 | |
| 681 | if (len < 4) { |
| 682 | strncpy(str, buff, len); |
| 683 | str[len+1] = '\0'; |
| 684 | } else { |
| 685 | strncpy(str, buff, 4); |
| 686 | str[4] = '\0'; |
| 687 | } |
| 688 | |
| 689 | val = simple_strtoul(str, &endp, 0); |
| 690 | |
| 691 | *count = 0; |
| 692 | if (val <= 0xff) |
| 693 | *count = (ssize_t)(endp - str); |
| 694 | if ((*count) && (len == *count+1) && (buff[*count] == '\n')) |
| 695 | *count += 1; |
| 696 | |
| 697 | return (u8)val; |
| 698 | } |
| 699 | |
| 700 | /* |
| 701 | NOTE 1: being inside one of the following methods implies that the v4l |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 702 | device exists for sure (see kobjects and reference counters) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 703 | NOTE 2: buffers are PAGE_SIZE long |
| 704 | */ |
| 705 | |
| 706 | static ssize_t et61x251_show_reg(struct class_device* cd, char* buf) |
| 707 | { |
| 708 | struct et61x251_device* cam; |
| 709 | ssize_t count; |
| 710 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 711 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 712 | return -ERESTARTSYS; |
| 713 | |
| 714 | cam = video_get_drvdata(to_video_device(cd)); |
| 715 | if (!cam) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 716 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 717 | return -ENODEV; |
| 718 | } |
| 719 | |
| 720 | count = sprintf(buf, "%u\n", cam->sysfs.reg); |
| 721 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 722 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 723 | |
| 724 | return count; |
| 725 | } |
| 726 | |
| 727 | |
| 728 | static ssize_t |
| 729 | et61x251_store_reg(struct class_device* cd, const char* buf, size_t len) |
| 730 | { |
| 731 | struct et61x251_device* cam; |
| 732 | u8 index; |
| 733 | ssize_t count; |
| 734 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 735 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 736 | return -ERESTARTSYS; |
| 737 | |
| 738 | cam = video_get_drvdata(to_video_device(cd)); |
| 739 | if (!cam) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 740 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 741 | return -ENODEV; |
| 742 | } |
| 743 | |
| 744 | index = et61x251_strtou8(buf, len, &count); |
| 745 | if (index > 0x8e || !count) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 746 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 747 | return -EINVAL; |
| 748 | } |
| 749 | |
| 750 | cam->sysfs.reg = index; |
| 751 | |
| 752 | DBG(2, "Moved ET61X[12]51 register index to 0x%02X", cam->sysfs.reg); |
| 753 | DBG(3, "Written bytes: %zd", count); |
| 754 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 755 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 756 | |
| 757 | return count; |
| 758 | } |
| 759 | |
| 760 | |
| 761 | static ssize_t et61x251_show_val(struct class_device* cd, char* buf) |
| 762 | { |
| 763 | struct et61x251_device* cam; |
| 764 | ssize_t count; |
| 765 | int val; |
| 766 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 767 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 768 | return -ERESTARTSYS; |
| 769 | |
| 770 | cam = video_get_drvdata(to_video_device(cd)); |
| 771 | if (!cam) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 772 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 773 | return -ENODEV; |
| 774 | } |
| 775 | |
| 776 | if ((val = et61x251_read_reg(cam, cam->sysfs.reg)) < 0) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 777 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 778 | return -EIO; |
| 779 | } |
| 780 | |
| 781 | count = sprintf(buf, "%d\n", val); |
| 782 | |
| 783 | DBG(3, "Read bytes: %zd", count); |
| 784 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 785 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 786 | |
| 787 | return count; |
| 788 | } |
| 789 | |
| 790 | |
| 791 | static ssize_t |
| 792 | et61x251_store_val(struct class_device* cd, const char* buf, size_t len) |
| 793 | { |
| 794 | struct et61x251_device* cam; |
| 795 | u8 value; |
| 796 | ssize_t count; |
| 797 | int err; |
| 798 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 799 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 800 | return -ERESTARTSYS; |
| 801 | |
| 802 | cam = video_get_drvdata(to_video_device(cd)); |
| 803 | if (!cam) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 804 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 805 | return -ENODEV; |
| 806 | } |
| 807 | |
| 808 | value = et61x251_strtou8(buf, len, &count); |
| 809 | if (!count) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 810 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 811 | return -EINVAL; |
| 812 | } |
| 813 | |
| 814 | err = et61x251_write_reg(cam, value, cam->sysfs.reg); |
| 815 | if (err) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 816 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 817 | return -EIO; |
| 818 | } |
| 819 | |
| 820 | DBG(2, "Written ET61X[12]51 reg. 0x%02X, val. 0x%02X", |
| 821 | cam->sysfs.reg, value); |
| 822 | DBG(3, "Written bytes: %zd", count); |
| 823 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 824 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 825 | |
| 826 | return count; |
| 827 | } |
| 828 | |
| 829 | |
| 830 | static ssize_t et61x251_show_i2c_reg(struct class_device* cd, char* buf) |
| 831 | { |
| 832 | struct et61x251_device* cam; |
| 833 | ssize_t count; |
| 834 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 835 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 836 | return -ERESTARTSYS; |
| 837 | |
| 838 | cam = video_get_drvdata(to_video_device(cd)); |
| 839 | if (!cam) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 840 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 841 | return -ENODEV; |
| 842 | } |
| 843 | |
| 844 | count = sprintf(buf, "%u\n", cam->sysfs.i2c_reg); |
| 845 | |
| 846 | DBG(3, "Read bytes: %zd", count); |
| 847 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 848 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 849 | |
| 850 | return count; |
| 851 | } |
| 852 | |
| 853 | |
| 854 | static ssize_t |
| 855 | et61x251_store_i2c_reg(struct class_device* cd, const char* buf, size_t len) |
| 856 | { |
| 857 | struct et61x251_device* cam; |
| 858 | u8 index; |
| 859 | ssize_t count; |
| 860 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 861 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 862 | return -ERESTARTSYS; |
| 863 | |
| 864 | cam = video_get_drvdata(to_video_device(cd)); |
| 865 | if (!cam) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 866 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 867 | return -ENODEV; |
| 868 | } |
| 869 | |
| 870 | index = et61x251_strtou8(buf, len, &count); |
| 871 | if (!count) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 872 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 873 | return -EINVAL; |
| 874 | } |
| 875 | |
| 876 | cam->sysfs.i2c_reg = index; |
| 877 | |
| 878 | DBG(2, "Moved sensor register index to 0x%02X", cam->sysfs.i2c_reg); |
| 879 | DBG(3, "Written bytes: %zd", count); |
| 880 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 881 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 882 | |
| 883 | return count; |
| 884 | } |
| 885 | |
| 886 | |
| 887 | static ssize_t et61x251_show_i2c_val(struct class_device* cd, char* buf) |
| 888 | { |
| 889 | struct et61x251_device* cam; |
| 890 | ssize_t count; |
| 891 | int val; |
| 892 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 893 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 894 | return -ERESTARTSYS; |
| 895 | |
| 896 | cam = video_get_drvdata(to_video_device(cd)); |
| 897 | if (!cam) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 898 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 899 | return -ENODEV; |
| 900 | } |
| 901 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 902 | if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) { |
| 903 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 904 | return -ENOSYS; |
| 905 | } |
| 906 | |
| 907 | if ((val = et61x251_i2c_read(cam, cam->sysfs.i2c_reg)) < 0) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 908 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 909 | return -EIO; |
| 910 | } |
| 911 | |
| 912 | count = sprintf(buf, "%d\n", val); |
| 913 | |
| 914 | DBG(3, "Read bytes: %zd", count); |
| 915 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 916 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 917 | |
| 918 | return count; |
| 919 | } |
| 920 | |
| 921 | |
| 922 | static ssize_t |
| 923 | et61x251_store_i2c_val(struct class_device* cd, const char* buf, size_t len) |
| 924 | { |
| 925 | struct et61x251_device* cam; |
| 926 | u8 value; |
| 927 | ssize_t count; |
| 928 | int err; |
| 929 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 930 | if (mutex_lock_interruptible(&et61x251_sysfs_lock)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 931 | return -ERESTARTSYS; |
| 932 | |
| 933 | cam = video_get_drvdata(to_video_device(cd)); |
| 934 | if (!cam) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 935 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 936 | return -ENODEV; |
| 937 | } |
| 938 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 939 | if (!(cam->sensor.sysfs_ops & ET61X251_I2C_READ)) { |
| 940 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 941 | return -ENOSYS; |
| 942 | } |
| 943 | |
| 944 | value = et61x251_strtou8(buf, len, &count); |
| 945 | if (!count) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 946 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 947 | return -EINVAL; |
| 948 | } |
| 949 | |
| 950 | err = et61x251_i2c_write(cam, cam->sysfs.i2c_reg, value); |
| 951 | if (err) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 952 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 953 | return -EIO; |
| 954 | } |
| 955 | |
| 956 | DBG(2, "Written sensor reg. 0x%02X, val. 0x%02X", |
| 957 | cam->sysfs.i2c_reg, value); |
| 958 | DBG(3, "Written bytes: %zd", count); |
| 959 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 960 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 961 | |
| 962 | return count; |
| 963 | } |
| 964 | |
| 965 | |
| 966 | static CLASS_DEVICE_ATTR(reg, S_IRUGO | S_IWUSR, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 967 | et61x251_show_reg, et61x251_store_reg); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 968 | static CLASS_DEVICE_ATTR(val, S_IRUGO | S_IWUSR, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 969 | et61x251_show_val, et61x251_store_val); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 970 | static CLASS_DEVICE_ATTR(i2c_reg, S_IRUGO | S_IWUSR, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 971 | et61x251_show_i2c_reg, et61x251_store_i2c_reg); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 972 | static CLASS_DEVICE_ATTR(i2c_val, S_IRUGO | S_IWUSR, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 973 | et61x251_show_i2c_val, et61x251_store_i2c_val); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 974 | |
| 975 | |
| 976 | static void et61x251_create_sysfs(struct et61x251_device* cam) |
| 977 | { |
| 978 | struct video_device *v4ldev = cam->v4ldev; |
| 979 | |
| 980 | video_device_create_file(v4ldev, &class_device_attr_reg); |
| 981 | video_device_create_file(v4ldev, &class_device_attr_val); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 982 | if (cam->sensor.sysfs_ops) { |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 983 | video_device_create_file(v4ldev, &class_device_attr_i2c_reg); |
| 984 | video_device_create_file(v4ldev, &class_device_attr_i2c_val); |
| 985 | } |
| 986 | } |
| 987 | #endif /* CONFIG_VIDEO_ADV_DEBUG */ |
| 988 | |
| 989 | /*****************************************************************************/ |
| 990 | |
| 991 | static int |
| 992 | et61x251_set_pix_format(struct et61x251_device* cam, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 993 | struct v4l2_pix_format* pix) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 994 | { |
| 995 | int r, err = 0; |
| 996 | |
| 997 | if ((r = et61x251_read_reg(cam, 0x12)) < 0) |
| 998 | err += r; |
| 999 | if (pix->pixelformat == V4L2_PIX_FMT_ET61X251) |
| 1000 | err += et61x251_write_reg(cam, r & 0xfd, 0x12); |
| 1001 | else |
| 1002 | err += et61x251_write_reg(cam, r | 0x02, 0x12); |
| 1003 | |
| 1004 | return err ? -EIO : 0; |
| 1005 | } |
| 1006 | |
| 1007 | |
| 1008 | static int |
| 1009 | et61x251_set_compression(struct et61x251_device* cam, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1010 | struct v4l2_jpegcompression* compression) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1011 | { |
| 1012 | int r, err = 0; |
| 1013 | |
| 1014 | if ((r = et61x251_read_reg(cam, 0x12)) < 0) |
| 1015 | err += r; |
| 1016 | if (compression->quality == 0) |
| 1017 | err += et61x251_write_reg(cam, r & 0xfb, 0x12); |
| 1018 | else |
| 1019 | err += et61x251_write_reg(cam, r | 0x04, 0x12); |
| 1020 | |
| 1021 | return err ? -EIO : 0; |
| 1022 | } |
| 1023 | |
| 1024 | |
| 1025 | static int et61x251_set_scale(struct et61x251_device* cam, u8 scale) |
| 1026 | { |
| 1027 | int r = 0, err = 0; |
| 1028 | |
| 1029 | r = et61x251_read_reg(cam, 0x12); |
| 1030 | if (r < 0) |
| 1031 | err += r; |
| 1032 | |
| 1033 | if (scale == 1) |
| 1034 | err += et61x251_write_reg(cam, r & ~0x01, 0x12); |
| 1035 | else if (scale == 2) |
| 1036 | err += et61x251_write_reg(cam, r | 0x01, 0x12); |
| 1037 | |
| 1038 | if (err) |
| 1039 | return -EIO; |
| 1040 | |
| 1041 | PDBGG("Scaling factor: %u", scale); |
| 1042 | |
| 1043 | return 0; |
| 1044 | } |
| 1045 | |
| 1046 | |
| 1047 | static int |
| 1048 | et61x251_set_crop(struct et61x251_device* cam, struct v4l2_rect* rect) |
| 1049 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1050 | struct et61x251_sensor* s = &cam->sensor; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1051 | u16 fmw_sx = (u16)(rect->left - s->cropcap.bounds.left + |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1052 | s->active_pixel.left), |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1053 | fmw_sy = (u16)(rect->top - s->cropcap.bounds.top + |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1054 | s->active_pixel.top), |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1055 | fmw_length = (u16)(rect->width), |
| 1056 | fmw_height = (u16)(rect->height); |
| 1057 | int err = 0; |
| 1058 | |
| 1059 | err += et61x251_write_reg(cam, fmw_sx & 0xff, 0x69); |
| 1060 | err += et61x251_write_reg(cam, fmw_sy & 0xff, 0x6a); |
| 1061 | err += et61x251_write_reg(cam, fmw_length & 0xff, 0x6b); |
| 1062 | err += et61x251_write_reg(cam, fmw_height & 0xff, 0x6c); |
| 1063 | err += et61x251_write_reg(cam, (fmw_sx >> 8) | ((fmw_sy & 0x300) >> 6) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1064 | | ((fmw_length & 0x300) >> 4) |
| 1065 | | ((fmw_height & 0x300) >> 2), 0x6d); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1066 | if (err) |
| 1067 | return -EIO; |
| 1068 | |
| 1069 | PDBGG("fmw_sx, fmw_sy, fmw_length, fmw_height: %u %u %u %u", |
| 1070 | fmw_sx, fmw_sy, fmw_length, fmw_height); |
| 1071 | |
| 1072 | return 0; |
| 1073 | } |
| 1074 | |
| 1075 | |
| 1076 | static int et61x251_init(struct et61x251_device* cam) |
| 1077 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1078 | struct et61x251_sensor* s = &cam->sensor; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1079 | struct v4l2_control ctrl; |
| 1080 | struct v4l2_queryctrl *qctrl; |
| 1081 | struct v4l2_rect* rect; |
| 1082 | u8 i = 0; |
| 1083 | int err = 0; |
| 1084 | |
| 1085 | if (!(cam->state & DEV_INITIALIZED)) { |
| 1086 | init_waitqueue_head(&cam->open); |
| 1087 | qctrl = s->qctrl; |
| 1088 | rect = &(s->cropcap.defrect); |
| 1089 | cam->compression.quality = ET61X251_COMPRESSION_QUALITY; |
| 1090 | } else { /* use current values */ |
| 1091 | qctrl = s->_qctrl; |
| 1092 | rect = &(s->_rect); |
| 1093 | } |
| 1094 | |
| 1095 | err += et61x251_set_scale(cam, rect->width / s->pix_format.width); |
| 1096 | err += et61x251_set_crop(cam, rect); |
| 1097 | if (err) |
| 1098 | return err; |
| 1099 | |
| 1100 | if (s->init) { |
| 1101 | err = s->init(cam); |
| 1102 | if (err) { |
| 1103 | DBG(3, "Sensor initialization failed"); |
| 1104 | return err; |
| 1105 | } |
| 1106 | } |
| 1107 | |
| 1108 | err += et61x251_set_compression(cam, &cam->compression); |
| 1109 | err += et61x251_set_pix_format(cam, &s->pix_format); |
| 1110 | if (s->set_pix_format) |
| 1111 | err += s->set_pix_format(cam, &s->pix_format); |
| 1112 | if (err) |
| 1113 | return err; |
| 1114 | |
| 1115 | if (s->pix_format.pixelformat == V4L2_PIX_FMT_ET61X251) |
| 1116 | DBG(3, "Compressed video format is active, quality %d", |
| 1117 | cam->compression.quality); |
| 1118 | else |
| 1119 | DBG(3, "Uncompressed video format is active"); |
| 1120 | |
| 1121 | if (s->set_crop) |
| 1122 | if ((err = s->set_crop(cam, rect))) { |
| 1123 | DBG(3, "set_crop() failed"); |
| 1124 | return err; |
| 1125 | } |
| 1126 | |
| 1127 | if (s->set_ctrl) { |
| 1128 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
| 1129 | if (s->qctrl[i].id != 0 && |
| 1130 | !(s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)) { |
| 1131 | ctrl.id = s->qctrl[i].id; |
| 1132 | ctrl.value = qctrl[i].default_value; |
| 1133 | err = s->set_ctrl(cam, &ctrl); |
| 1134 | if (err) { |
| 1135 | DBG(3, "Set %s control failed", |
| 1136 | s->qctrl[i].name); |
| 1137 | return err; |
| 1138 | } |
| 1139 | DBG(3, "Image sensor supports '%s' control", |
| 1140 | s->qctrl[i].name); |
| 1141 | } |
| 1142 | } |
| 1143 | |
| 1144 | if (!(cam->state & DEV_INITIALIZED)) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1145 | mutex_init(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1146 | spin_lock_init(&cam->queue_lock); |
| 1147 | init_waitqueue_head(&cam->wait_frame); |
| 1148 | init_waitqueue_head(&cam->wait_stream); |
| 1149 | cam->nreadbuffers = 2; |
| 1150 | memcpy(s->_qctrl, s->qctrl, sizeof(s->qctrl)); |
| 1151 | memcpy(&(s->_rect), &(s->cropcap.defrect), |
| 1152 | sizeof(struct v4l2_rect)); |
| 1153 | cam->state |= DEV_INITIALIZED; |
| 1154 | } |
| 1155 | |
| 1156 | DBG(2, "Initialization succeeded"); |
| 1157 | return 0; |
| 1158 | } |
| 1159 | |
| 1160 | |
| 1161 | static void et61x251_release_resources(struct et61x251_device* cam) |
| 1162 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1163 | mutex_lock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1164 | |
| 1165 | DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->minor); |
| 1166 | video_set_drvdata(cam->v4ldev, NULL); |
| 1167 | video_unregister_device(cam->v4ldev); |
| 1168 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1169 | usb_put_dev(cam->usbdev); |
| 1170 | |
| 1171 | mutex_unlock(&et61x251_sysfs_lock); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1172 | |
| 1173 | kfree(cam->control_buffer); |
| 1174 | } |
| 1175 | |
| 1176 | /*****************************************************************************/ |
| 1177 | |
| 1178 | static int et61x251_open(struct inode* inode, struct file* filp) |
| 1179 | { |
| 1180 | struct et61x251_device* cam; |
| 1181 | int err = 0; |
| 1182 | |
| 1183 | /* |
| 1184 | This is the only safe way to prevent race conditions with |
| 1185 | disconnect |
| 1186 | */ |
| 1187 | if (!down_read_trylock(&et61x251_disconnect)) |
| 1188 | return -ERESTARTSYS; |
| 1189 | |
| 1190 | cam = video_get_drvdata(video_devdata(filp)); |
| 1191 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1192 | if (mutex_lock_interruptible(&cam->dev_mutex)) { |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1193 | up_read(&et61x251_disconnect); |
| 1194 | return -ERESTARTSYS; |
| 1195 | } |
| 1196 | |
| 1197 | if (cam->users) { |
| 1198 | DBG(2, "Device /dev/video%d is busy...", cam->v4ldev->minor); |
| 1199 | if ((filp->f_flags & O_NONBLOCK) || |
| 1200 | (filp->f_flags & O_NDELAY)) { |
| 1201 | err = -EWOULDBLOCK; |
| 1202 | goto out; |
| 1203 | } |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1204 | mutex_unlock(&cam->dev_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1205 | err = wait_event_interruptible_exclusive(cam->open, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1206 | cam->state & DEV_DISCONNECTED |
| 1207 | || !cam->users); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1208 | if (err) { |
| 1209 | up_read(&et61x251_disconnect); |
| 1210 | return err; |
| 1211 | } |
| 1212 | if (cam->state & DEV_DISCONNECTED) { |
| 1213 | up_read(&et61x251_disconnect); |
| 1214 | return -ENODEV; |
| 1215 | } |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1216 | mutex_lock(&cam->dev_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1217 | } |
| 1218 | |
| 1219 | |
| 1220 | if (cam->state & DEV_MISCONFIGURED) { |
| 1221 | err = et61x251_init(cam); |
| 1222 | if (err) { |
| 1223 | DBG(1, "Initialization failed again. " |
| 1224 | "I will retry on next open()."); |
| 1225 | goto out; |
| 1226 | } |
| 1227 | cam->state &= ~DEV_MISCONFIGURED; |
| 1228 | } |
| 1229 | |
| 1230 | if ((err = et61x251_start_transfer(cam))) |
| 1231 | goto out; |
| 1232 | |
| 1233 | filp->private_data = cam; |
| 1234 | cam->users++; |
| 1235 | cam->io = IO_NONE; |
| 1236 | cam->stream = STREAM_OFF; |
| 1237 | cam->nbuffers = 0; |
| 1238 | cam->frame_count = 0; |
| 1239 | et61x251_empty_framequeues(cam); |
| 1240 | |
| 1241 | DBG(3, "Video device /dev/video%d is open", cam->v4ldev->minor); |
| 1242 | |
| 1243 | out: |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1244 | mutex_unlock(&cam->dev_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1245 | up_read(&et61x251_disconnect); |
| 1246 | return err; |
| 1247 | } |
| 1248 | |
| 1249 | |
| 1250 | static int et61x251_release(struct inode* inode, struct file* filp) |
| 1251 | { |
| 1252 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); |
| 1253 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1254 | mutex_lock(&cam->dev_mutex); /* prevent disconnect() to be called */ |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1255 | |
| 1256 | et61x251_stop_transfer(cam); |
| 1257 | |
| 1258 | et61x251_release_buffers(cam); |
| 1259 | |
| 1260 | if (cam->state & DEV_DISCONNECTED) { |
| 1261 | et61x251_release_resources(cam); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1262 | mutex_unlock(&cam->dev_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1263 | kfree(cam); |
| 1264 | return 0; |
| 1265 | } |
| 1266 | |
| 1267 | cam->users--; |
| 1268 | wake_up_interruptible_nr(&cam->open, 1); |
| 1269 | |
| 1270 | DBG(3, "Video device /dev/video%d closed", cam->v4ldev->minor); |
| 1271 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1272 | mutex_unlock(&cam->dev_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1273 | |
| 1274 | return 0; |
| 1275 | } |
| 1276 | |
| 1277 | |
| 1278 | static ssize_t |
| 1279 | et61x251_read(struct file* filp, char __user * buf, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1280 | size_t count, loff_t* f_pos) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1281 | { |
| 1282 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); |
| 1283 | struct et61x251_frame_t* f, * i; |
| 1284 | unsigned long lock_flags; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1285 | long timeout; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1286 | int err = 0; |
| 1287 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1288 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1289 | return -ERESTARTSYS; |
| 1290 | |
| 1291 | if (cam->state & DEV_DISCONNECTED) { |
| 1292 | DBG(1, "Device not present"); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1293 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1294 | return -ENODEV; |
| 1295 | } |
| 1296 | |
| 1297 | if (cam->state & DEV_MISCONFIGURED) { |
| 1298 | DBG(1, "The camera is misconfigured. Close and open it " |
| 1299 | "again."); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1300 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1301 | return -EIO; |
| 1302 | } |
| 1303 | |
| 1304 | if (cam->io == IO_MMAP) { |
| 1305 | DBG(3, "Close and open the device again to choose the read " |
| 1306 | "method"); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1307 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1308 | return -EINVAL; |
| 1309 | } |
| 1310 | |
| 1311 | if (cam->io == IO_NONE) { |
| 1312 | if (!et61x251_request_buffers(cam, cam->nreadbuffers, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1313 | IO_READ)) { |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1314 | DBG(1, "read() failed, not enough memory"); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1315 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1316 | return -ENOMEM; |
| 1317 | } |
| 1318 | cam->io = IO_READ; |
| 1319 | cam->stream = STREAM_ON; |
| 1320 | } |
| 1321 | |
| 1322 | if (list_empty(&cam->inqueue)) { |
| 1323 | if (!list_empty(&cam->outqueue)) |
| 1324 | et61x251_empty_framequeues(cam); |
| 1325 | et61x251_queue_unusedframes(cam); |
| 1326 | } |
| 1327 | |
| 1328 | if (!count) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1329 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1330 | return 0; |
| 1331 | } |
| 1332 | |
| 1333 | if (list_empty(&cam->outqueue)) { |
| 1334 | if (filp->f_flags & O_NONBLOCK) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1335 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1336 | return -EAGAIN; |
| 1337 | } |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1338 | timeout = wait_event_interruptible_timeout |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1339 | ( cam->wait_frame, |
| 1340 | (!list_empty(&cam->outqueue)) || |
| 1341 | (cam->state & DEV_DISCONNECTED) || |
| 1342 | (cam->state & DEV_MISCONFIGURED), |
| 1343 | cam->module_param.frame_timeout * |
| 1344 | 1000 * msecs_to_jiffies(1) ); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1345 | if (timeout < 0) { |
| 1346 | mutex_unlock(&cam->fileop_mutex); |
| 1347 | return timeout; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1348 | } |
| 1349 | if (cam->state & DEV_DISCONNECTED) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1350 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1351 | return -ENODEV; |
| 1352 | } |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1353 | if (!timeout || (cam->state & DEV_MISCONFIGURED)) { |
| 1354 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1355 | return -EIO; |
| 1356 | } |
| 1357 | } |
| 1358 | |
| 1359 | f = list_entry(cam->outqueue.prev, struct et61x251_frame_t, frame); |
| 1360 | |
| 1361 | if (count > f->buf.bytesused) |
| 1362 | count = f->buf.bytesused; |
| 1363 | |
| 1364 | if (copy_to_user(buf, f->bufmem, count)) { |
| 1365 | err = -EFAULT; |
| 1366 | goto exit; |
| 1367 | } |
| 1368 | *f_pos += count; |
| 1369 | |
| 1370 | exit: |
| 1371 | spin_lock_irqsave(&cam->queue_lock, lock_flags); |
| 1372 | list_for_each_entry(i, &cam->outqueue, frame) |
| 1373 | i->state = F_UNUSED; |
| 1374 | INIT_LIST_HEAD(&cam->outqueue); |
| 1375 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); |
| 1376 | |
| 1377 | et61x251_queue_unusedframes(cam); |
| 1378 | |
| 1379 | PDBGG("Frame #%lu, bytes read: %zu", |
| 1380 | (unsigned long)f->buf.index, count); |
| 1381 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1382 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1383 | |
| 1384 | return err ? err : count; |
| 1385 | } |
| 1386 | |
| 1387 | |
| 1388 | static unsigned int et61x251_poll(struct file *filp, poll_table *wait) |
| 1389 | { |
| 1390 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); |
| 1391 | struct et61x251_frame_t* f; |
| 1392 | unsigned long lock_flags; |
| 1393 | unsigned int mask = 0; |
| 1394 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1395 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1396 | return POLLERR; |
| 1397 | |
| 1398 | if (cam->state & DEV_DISCONNECTED) { |
| 1399 | DBG(1, "Device not present"); |
| 1400 | goto error; |
| 1401 | } |
| 1402 | |
| 1403 | if (cam->state & DEV_MISCONFIGURED) { |
| 1404 | DBG(1, "The camera is misconfigured. Close and open it " |
| 1405 | "again."); |
| 1406 | goto error; |
| 1407 | } |
| 1408 | |
| 1409 | if (cam->io == IO_NONE) { |
| 1410 | if (!et61x251_request_buffers(cam, cam->nreadbuffers, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1411 | IO_READ)) { |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1412 | DBG(1, "poll() failed, not enough memory"); |
| 1413 | goto error; |
| 1414 | } |
| 1415 | cam->io = IO_READ; |
| 1416 | cam->stream = STREAM_ON; |
| 1417 | } |
| 1418 | |
| 1419 | if (cam->io == IO_READ) { |
| 1420 | spin_lock_irqsave(&cam->queue_lock, lock_flags); |
| 1421 | list_for_each_entry(f, &cam->outqueue, frame) |
| 1422 | f->state = F_UNUSED; |
| 1423 | INIT_LIST_HEAD(&cam->outqueue); |
| 1424 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); |
| 1425 | et61x251_queue_unusedframes(cam); |
| 1426 | } |
| 1427 | |
| 1428 | poll_wait(filp, &cam->wait_frame, wait); |
| 1429 | |
| 1430 | if (!list_empty(&cam->outqueue)) |
| 1431 | mask |= POLLIN | POLLRDNORM; |
| 1432 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1433 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1434 | |
| 1435 | return mask; |
| 1436 | |
| 1437 | error: |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1438 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1439 | return POLLERR; |
| 1440 | } |
| 1441 | |
| 1442 | |
| 1443 | static void et61x251_vm_open(struct vm_area_struct* vma) |
| 1444 | { |
| 1445 | struct et61x251_frame_t* f = vma->vm_private_data; |
| 1446 | f->vma_use_count++; |
| 1447 | } |
| 1448 | |
| 1449 | |
| 1450 | static void et61x251_vm_close(struct vm_area_struct* vma) |
| 1451 | { |
| 1452 | /* NOTE: buffers are not freed here */ |
| 1453 | struct et61x251_frame_t* f = vma->vm_private_data; |
| 1454 | f->vma_use_count--; |
| 1455 | } |
| 1456 | |
| 1457 | |
| 1458 | static struct vm_operations_struct et61x251_vm_ops = { |
| 1459 | .open = et61x251_vm_open, |
| 1460 | .close = et61x251_vm_close, |
| 1461 | }; |
| 1462 | |
| 1463 | |
| 1464 | static int et61x251_mmap(struct file* filp, struct vm_area_struct *vma) |
| 1465 | { |
| 1466 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); |
| 1467 | unsigned long size = vma->vm_end - vma->vm_start, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1468 | start = vma->vm_start; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1469 | void *pos; |
| 1470 | u32 i; |
| 1471 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1472 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1473 | return -ERESTARTSYS; |
| 1474 | |
| 1475 | if (cam->state & DEV_DISCONNECTED) { |
| 1476 | DBG(1, "Device not present"); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1477 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1478 | return -ENODEV; |
| 1479 | } |
| 1480 | |
| 1481 | if (cam->state & DEV_MISCONFIGURED) { |
| 1482 | DBG(1, "The camera is misconfigured. Close and open it " |
| 1483 | "again."); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1484 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1485 | return -EIO; |
| 1486 | } |
| 1487 | |
| 1488 | if (cam->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) || |
| 1489 | size != PAGE_ALIGN(cam->frame[0].buf.length)) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1490 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1491 | return -EINVAL; |
| 1492 | } |
| 1493 | |
| 1494 | for (i = 0; i < cam->nbuffers; i++) { |
| 1495 | if ((cam->frame[i].buf.m.offset>>PAGE_SHIFT) == vma->vm_pgoff) |
| 1496 | break; |
| 1497 | } |
| 1498 | if (i == cam->nbuffers) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1499 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1500 | return -EINVAL; |
| 1501 | } |
| 1502 | |
| 1503 | vma->vm_flags |= VM_IO; |
| 1504 | vma->vm_flags |= VM_RESERVED; |
| 1505 | |
| 1506 | pos = cam->frame[i].bufmem; |
| 1507 | while (size > 0) { /* size is page-aligned */ |
| 1508 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1509 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1510 | return -EAGAIN; |
| 1511 | } |
| 1512 | start += PAGE_SIZE; |
| 1513 | pos += PAGE_SIZE; |
| 1514 | size -= PAGE_SIZE; |
| 1515 | } |
| 1516 | |
| 1517 | vma->vm_ops = &et61x251_vm_ops; |
| 1518 | vma->vm_private_data = &cam->frame[i]; |
| 1519 | |
| 1520 | et61x251_vm_open(vma); |
| 1521 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1522 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1523 | |
| 1524 | return 0; |
| 1525 | } |
| 1526 | |
| 1527 | /*****************************************************************************/ |
| 1528 | |
| 1529 | static int |
| 1530 | et61x251_vidioc_querycap(struct et61x251_device* cam, void __user * arg) |
| 1531 | { |
| 1532 | struct v4l2_capability cap = { |
| 1533 | .driver = "et61x251", |
| 1534 | .version = ET61X251_MODULE_VERSION_CODE, |
| 1535 | .capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1536 | V4L2_CAP_STREAMING, |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1537 | }; |
| 1538 | |
| 1539 | strlcpy(cap.card, cam->v4ldev->name, sizeof(cap.card)); |
| 1540 | if (usb_make_path(cam->usbdev, cap.bus_info, sizeof(cap.bus_info)) < 0) |
| 1541 | strlcpy(cap.bus_info, cam->usbdev->dev.bus_id, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1542 | sizeof(cap.bus_info)); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1543 | |
| 1544 | if (copy_to_user(arg, &cap, sizeof(cap))) |
| 1545 | return -EFAULT; |
| 1546 | |
| 1547 | return 0; |
| 1548 | } |
| 1549 | |
| 1550 | |
| 1551 | static int |
| 1552 | et61x251_vidioc_enuminput(struct et61x251_device* cam, void __user * arg) |
| 1553 | { |
| 1554 | struct v4l2_input i; |
| 1555 | |
| 1556 | if (copy_from_user(&i, arg, sizeof(i))) |
| 1557 | return -EFAULT; |
| 1558 | |
| 1559 | if (i.index) |
| 1560 | return -EINVAL; |
| 1561 | |
| 1562 | memset(&i, 0, sizeof(i)); |
| 1563 | strcpy(i.name, "Camera"); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1564 | i.type = V4L2_INPUT_TYPE_CAMERA; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1565 | |
| 1566 | if (copy_to_user(arg, &i, sizeof(i))) |
| 1567 | return -EFAULT; |
| 1568 | |
| 1569 | return 0; |
| 1570 | } |
| 1571 | |
| 1572 | |
| 1573 | static int |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1574 | et61x251_vidioc_g_input(struct et61x251_device* cam, void __user * arg) |
| 1575 | { |
| 1576 | int index = 0; |
| 1577 | |
| 1578 | if (copy_to_user(arg, &index, sizeof(index))) |
| 1579 | return -EFAULT; |
| 1580 | |
| 1581 | return 0; |
| 1582 | } |
| 1583 | |
| 1584 | |
| 1585 | static int |
| 1586 | et61x251_vidioc_s_input(struct et61x251_device* cam, void __user * arg) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1587 | { |
| 1588 | int index; |
| 1589 | |
| 1590 | if (copy_from_user(&index, arg, sizeof(index))) |
| 1591 | return -EFAULT; |
| 1592 | |
| 1593 | if (index != 0) |
| 1594 | return -EINVAL; |
| 1595 | |
| 1596 | return 0; |
| 1597 | } |
| 1598 | |
| 1599 | |
| 1600 | static int |
| 1601 | et61x251_vidioc_query_ctrl(struct et61x251_device* cam, void __user * arg) |
| 1602 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1603 | struct et61x251_sensor* s = &cam->sensor; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1604 | struct v4l2_queryctrl qc; |
| 1605 | u8 i; |
| 1606 | |
| 1607 | if (copy_from_user(&qc, arg, sizeof(qc))) |
| 1608 | return -EFAULT; |
| 1609 | |
| 1610 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
| 1611 | if (qc.id && qc.id == s->qctrl[i].id) { |
| 1612 | memcpy(&qc, &(s->qctrl[i]), sizeof(qc)); |
| 1613 | if (copy_to_user(arg, &qc, sizeof(qc))) |
| 1614 | return -EFAULT; |
| 1615 | return 0; |
| 1616 | } |
| 1617 | |
| 1618 | return -EINVAL; |
| 1619 | } |
| 1620 | |
| 1621 | |
| 1622 | static int |
| 1623 | et61x251_vidioc_g_ctrl(struct et61x251_device* cam, void __user * arg) |
| 1624 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1625 | struct et61x251_sensor* s = &cam->sensor; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1626 | struct v4l2_control ctrl; |
| 1627 | int err = 0; |
| 1628 | u8 i; |
| 1629 | |
| 1630 | if (!s->get_ctrl && !s->set_ctrl) |
| 1631 | return -EINVAL; |
| 1632 | |
| 1633 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) |
| 1634 | return -EFAULT; |
| 1635 | |
| 1636 | if (!s->get_ctrl) { |
| 1637 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
| 1638 | if (ctrl.id == s->qctrl[i].id) { |
| 1639 | ctrl.value = s->_qctrl[i].default_value; |
| 1640 | goto exit; |
| 1641 | } |
| 1642 | return -EINVAL; |
| 1643 | } else |
| 1644 | err = s->get_ctrl(cam, &ctrl); |
| 1645 | |
| 1646 | exit: |
| 1647 | if (copy_to_user(arg, &ctrl, sizeof(ctrl))) |
| 1648 | return -EFAULT; |
| 1649 | |
| 1650 | return err; |
| 1651 | } |
| 1652 | |
| 1653 | |
| 1654 | static int |
| 1655 | et61x251_vidioc_s_ctrl(struct et61x251_device* cam, void __user * arg) |
| 1656 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1657 | struct et61x251_sensor* s = &cam->sensor; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1658 | struct v4l2_control ctrl; |
| 1659 | u8 i; |
| 1660 | int err = 0; |
| 1661 | |
| 1662 | if (!s->set_ctrl) |
| 1663 | return -EINVAL; |
| 1664 | |
| 1665 | if (copy_from_user(&ctrl, arg, sizeof(ctrl))) |
| 1666 | return -EFAULT; |
| 1667 | |
| 1668 | for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
| 1669 | if (ctrl.id == s->qctrl[i].id) { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1670 | if (s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED) |
| 1671 | return -EINVAL; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1672 | if (ctrl.value < s->qctrl[i].minimum || |
| 1673 | ctrl.value > s->qctrl[i].maximum) |
| 1674 | return -ERANGE; |
| 1675 | ctrl.value -= ctrl.value % s->qctrl[i].step; |
| 1676 | break; |
| 1677 | } |
| 1678 | |
| 1679 | if ((err = s->set_ctrl(cam, &ctrl))) |
| 1680 | return err; |
| 1681 | |
| 1682 | s->_qctrl[i].default_value = ctrl.value; |
| 1683 | |
| 1684 | return 0; |
| 1685 | } |
| 1686 | |
| 1687 | |
| 1688 | static int |
| 1689 | et61x251_vidioc_cropcap(struct et61x251_device* cam, void __user * arg) |
| 1690 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1691 | struct v4l2_cropcap* cc = &(cam->sensor.cropcap); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1692 | |
| 1693 | cc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1694 | cc->pixelaspect.numerator = 1; |
| 1695 | cc->pixelaspect.denominator = 1; |
| 1696 | |
| 1697 | if (copy_to_user(arg, cc, sizeof(*cc))) |
| 1698 | return -EFAULT; |
| 1699 | |
| 1700 | return 0; |
| 1701 | } |
| 1702 | |
| 1703 | |
| 1704 | static int |
| 1705 | et61x251_vidioc_g_crop(struct et61x251_device* cam, void __user * arg) |
| 1706 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1707 | struct et61x251_sensor* s = &cam->sensor; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1708 | struct v4l2_crop crop = { |
| 1709 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 1710 | }; |
| 1711 | |
| 1712 | memcpy(&(crop.c), &(s->_rect), sizeof(struct v4l2_rect)); |
| 1713 | |
| 1714 | if (copy_to_user(arg, &crop, sizeof(crop))) |
| 1715 | return -EFAULT; |
| 1716 | |
| 1717 | return 0; |
| 1718 | } |
| 1719 | |
| 1720 | |
| 1721 | static int |
| 1722 | et61x251_vidioc_s_crop(struct et61x251_device* cam, void __user * arg) |
| 1723 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1724 | struct et61x251_sensor* s = &cam->sensor; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1725 | struct v4l2_crop crop; |
| 1726 | struct v4l2_rect* rect; |
| 1727 | struct v4l2_rect* bounds = &(s->cropcap.bounds); |
| 1728 | struct v4l2_pix_format* pix_format = &(s->pix_format); |
| 1729 | u8 scale; |
| 1730 | const enum et61x251_stream_state stream = cam->stream; |
| 1731 | const u32 nbuffers = cam->nbuffers; |
| 1732 | u32 i; |
| 1733 | int err = 0; |
| 1734 | |
| 1735 | if (copy_from_user(&crop, arg, sizeof(crop))) |
| 1736 | return -EFAULT; |
| 1737 | |
| 1738 | rect = &(crop.c); |
| 1739 | |
| 1740 | if (crop.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1741 | return -EINVAL; |
| 1742 | |
| 1743 | if (cam->module_param.force_munmap) |
| 1744 | for (i = 0; i < cam->nbuffers; i++) |
| 1745 | if (cam->frame[i].vma_use_count) { |
| 1746 | DBG(3, "VIDIOC_S_CROP failed. " |
| 1747 | "Unmap the buffers first."); |
| 1748 | return -EINVAL; |
| 1749 | } |
| 1750 | |
| 1751 | /* Preserve R,G or B origin */ |
| 1752 | rect->left = (s->_rect.left & 1L) ? rect->left | 1L : rect->left & ~1L; |
| 1753 | rect->top = (s->_rect.top & 1L) ? rect->top | 1L : rect->top & ~1L; |
| 1754 | |
| 1755 | if (rect->width < 4) |
| 1756 | rect->width = 4; |
| 1757 | if (rect->height < 4) |
| 1758 | rect->height = 4; |
| 1759 | if (rect->width > bounds->width) |
| 1760 | rect->width = bounds->width; |
| 1761 | if (rect->height > bounds->height) |
| 1762 | rect->height = bounds->height; |
| 1763 | if (rect->left < bounds->left) |
| 1764 | rect->left = bounds->left; |
| 1765 | if (rect->top < bounds->top) |
| 1766 | rect->top = bounds->top; |
| 1767 | if (rect->left + rect->width > bounds->left + bounds->width) |
| 1768 | rect->left = bounds->left+bounds->width - rect->width; |
| 1769 | if (rect->top + rect->height > bounds->top + bounds->height) |
| 1770 | rect->top = bounds->top+bounds->height - rect->height; |
| 1771 | |
| 1772 | rect->width &= ~3L; |
| 1773 | rect->height &= ~3L; |
| 1774 | |
| 1775 | if (ET61X251_PRESERVE_IMGSCALE) { |
| 1776 | /* Calculate the actual scaling factor */ |
| 1777 | u32 a, b; |
| 1778 | a = rect->width * rect->height; |
| 1779 | b = pix_format->width * pix_format->height; |
| 1780 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; |
| 1781 | } else |
| 1782 | scale = 1; |
| 1783 | |
| 1784 | if (cam->stream == STREAM_ON) |
| 1785 | if ((err = et61x251_stream_interrupt(cam))) |
| 1786 | return err; |
| 1787 | |
| 1788 | if (copy_to_user(arg, &crop, sizeof(crop))) { |
| 1789 | cam->stream = stream; |
| 1790 | return -EFAULT; |
| 1791 | } |
| 1792 | |
| 1793 | if (cam->module_param.force_munmap || cam->io == IO_READ) |
| 1794 | et61x251_release_buffers(cam); |
| 1795 | |
| 1796 | err = et61x251_set_crop(cam, rect); |
| 1797 | if (s->set_crop) |
| 1798 | err += s->set_crop(cam, rect); |
| 1799 | err += et61x251_set_scale(cam, scale); |
| 1800 | |
| 1801 | if (err) { /* atomic, no rollback in ioctl() */ |
| 1802 | cam->state |= DEV_MISCONFIGURED; |
| 1803 | DBG(1, "VIDIOC_S_CROP failed because of hardware problems. To " |
| 1804 | "use the camera, close and open /dev/video%d again.", |
| 1805 | cam->v4ldev->minor); |
| 1806 | return -EIO; |
| 1807 | } |
| 1808 | |
| 1809 | s->pix_format.width = rect->width/scale; |
| 1810 | s->pix_format.height = rect->height/scale; |
| 1811 | memcpy(&(s->_rect), rect, sizeof(*rect)); |
| 1812 | |
| 1813 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && |
| 1814 | nbuffers != et61x251_request_buffers(cam, nbuffers, cam->io)) { |
| 1815 | cam->state |= DEV_MISCONFIGURED; |
| 1816 | DBG(1, "VIDIOC_S_CROP failed because of not enough memory. To " |
| 1817 | "use the camera, close and open /dev/video%d again.", |
| 1818 | cam->v4ldev->minor); |
| 1819 | return -ENOMEM; |
| 1820 | } |
| 1821 | |
| 1822 | if (cam->io == IO_READ) |
| 1823 | et61x251_empty_framequeues(cam); |
| 1824 | else if (cam->module_param.force_munmap) |
| 1825 | et61x251_requeue_outqueue(cam); |
| 1826 | |
| 1827 | cam->stream = stream; |
| 1828 | |
| 1829 | return 0; |
| 1830 | } |
| 1831 | |
| 1832 | |
| 1833 | static int |
| 1834 | et61x251_vidioc_enum_fmt(struct et61x251_device* cam, void __user * arg) |
| 1835 | { |
| 1836 | struct v4l2_fmtdesc fmtd; |
| 1837 | |
| 1838 | if (copy_from_user(&fmtd, arg, sizeof(fmtd))) |
| 1839 | return -EFAULT; |
| 1840 | |
| 1841 | if (fmtd.index == 0) { |
| 1842 | strcpy(fmtd.description, "bayer rgb"); |
| 1843 | fmtd.pixelformat = V4L2_PIX_FMT_SBGGR8; |
| 1844 | } else if (fmtd.index == 1) { |
| 1845 | strcpy(fmtd.description, "compressed"); |
| 1846 | fmtd.pixelformat = V4L2_PIX_FMT_ET61X251; |
| 1847 | fmtd.flags = V4L2_FMT_FLAG_COMPRESSED; |
| 1848 | } else |
| 1849 | return -EINVAL; |
| 1850 | |
| 1851 | fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1852 | memset(&fmtd.reserved, 0, sizeof(fmtd.reserved)); |
| 1853 | |
| 1854 | if (copy_to_user(arg, &fmtd, sizeof(fmtd))) |
| 1855 | return -EFAULT; |
| 1856 | |
| 1857 | return 0; |
| 1858 | } |
| 1859 | |
| 1860 | |
| 1861 | static int |
| 1862 | et61x251_vidioc_g_fmt(struct et61x251_device* cam, void __user * arg) |
| 1863 | { |
| 1864 | struct v4l2_format format; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1865 | struct v4l2_pix_format* pfmt = &(cam->sensor.pix_format); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1866 | |
| 1867 | if (copy_from_user(&format, arg, sizeof(format))) |
| 1868 | return -EFAULT; |
| 1869 | |
| 1870 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1871 | return -EINVAL; |
| 1872 | |
| 1873 | pfmt->bytesperline = (pfmt->pixelformat==V4L2_PIX_FMT_ET61X251) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1874 | ? 0 : (pfmt->width * pfmt->priv) / 8; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1875 | pfmt->sizeimage = pfmt->height * ((pfmt->width*pfmt->priv)/8); |
| 1876 | pfmt->field = V4L2_FIELD_NONE; |
| 1877 | memcpy(&(format.fmt.pix), pfmt, sizeof(*pfmt)); |
| 1878 | |
| 1879 | if (copy_to_user(arg, &format, sizeof(format))) |
| 1880 | return -EFAULT; |
| 1881 | |
| 1882 | return 0; |
| 1883 | } |
| 1884 | |
| 1885 | |
| 1886 | static int |
| 1887 | et61x251_vidioc_try_s_fmt(struct et61x251_device* cam, unsigned int cmd, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1888 | void __user * arg) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1889 | { |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 1890 | struct et61x251_sensor* s = &cam->sensor; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1891 | struct v4l2_format format; |
| 1892 | struct v4l2_pix_format* pix; |
| 1893 | struct v4l2_pix_format* pfmt = &(s->pix_format); |
| 1894 | struct v4l2_rect* bounds = &(s->cropcap.bounds); |
| 1895 | struct v4l2_rect rect; |
| 1896 | u8 scale; |
| 1897 | const enum et61x251_stream_state stream = cam->stream; |
| 1898 | const u32 nbuffers = cam->nbuffers; |
| 1899 | u32 i; |
| 1900 | int err = 0; |
| 1901 | |
| 1902 | if (copy_from_user(&format, arg, sizeof(format))) |
| 1903 | return -EFAULT; |
| 1904 | |
| 1905 | pix = &(format.fmt.pix); |
| 1906 | |
| 1907 | if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1908 | return -EINVAL; |
| 1909 | |
| 1910 | memcpy(&rect, &(s->_rect), sizeof(rect)); |
| 1911 | |
| 1912 | { /* calculate the actual scaling factor */ |
| 1913 | u32 a, b; |
| 1914 | a = rect.width * rect.height; |
| 1915 | b = pix->width * pix->height; |
| 1916 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; |
| 1917 | } |
| 1918 | |
| 1919 | rect.width = scale * pix->width; |
| 1920 | rect.height = scale * pix->height; |
| 1921 | |
| 1922 | if (rect.width < 4) |
| 1923 | rect.width = 4; |
| 1924 | if (rect.height < 4) |
| 1925 | rect.height = 4; |
| 1926 | if (rect.width > bounds->left + bounds->width - rect.left) |
| 1927 | rect.width = bounds->left + bounds->width - rect.left; |
| 1928 | if (rect.height > bounds->top + bounds->height - rect.top) |
| 1929 | rect.height = bounds->top + bounds->height - rect.top; |
| 1930 | |
| 1931 | rect.width &= ~3L; |
| 1932 | rect.height &= ~3L; |
| 1933 | |
| 1934 | { /* adjust the scaling factor */ |
| 1935 | u32 a, b; |
| 1936 | a = rect.width * rect.height; |
| 1937 | b = pix->width * pix->height; |
| 1938 | scale = b ? (u8)((a / b) < 4 ? 1 : 2) : 1; |
| 1939 | } |
| 1940 | |
| 1941 | pix->width = rect.width / scale; |
| 1942 | pix->height = rect.height / scale; |
| 1943 | |
| 1944 | if (pix->pixelformat != V4L2_PIX_FMT_ET61X251 && |
| 1945 | pix->pixelformat != V4L2_PIX_FMT_SBGGR8) |
| 1946 | pix->pixelformat = pfmt->pixelformat; |
| 1947 | pix->priv = pfmt->priv; /* bpp */ |
| 1948 | pix->colorspace = pfmt->colorspace; |
| 1949 | pix->bytesperline = (pix->pixelformat == V4L2_PIX_FMT_ET61X251) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1950 | ? 0 : (pix->width * pix->priv) / 8; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 1951 | pix->sizeimage = pix->height * ((pix->width * pix->priv) / 8); |
| 1952 | pix->field = V4L2_FIELD_NONE; |
| 1953 | |
| 1954 | if (cmd == VIDIOC_TRY_FMT) { |
| 1955 | if (copy_to_user(arg, &format, sizeof(format))) |
| 1956 | return -EFAULT; |
| 1957 | return 0; |
| 1958 | } |
| 1959 | |
| 1960 | if (cam->module_param.force_munmap) |
| 1961 | for (i = 0; i < cam->nbuffers; i++) |
| 1962 | if (cam->frame[i].vma_use_count) { |
| 1963 | DBG(3, "VIDIOC_S_FMT failed. " |
| 1964 | "Unmap the buffers first."); |
| 1965 | return -EINVAL; |
| 1966 | } |
| 1967 | |
| 1968 | if (cam->stream == STREAM_ON) |
| 1969 | if ((err = et61x251_stream_interrupt(cam))) |
| 1970 | return err; |
| 1971 | |
| 1972 | if (copy_to_user(arg, &format, sizeof(format))) { |
| 1973 | cam->stream = stream; |
| 1974 | return -EFAULT; |
| 1975 | } |
| 1976 | |
| 1977 | if (cam->module_param.force_munmap || cam->io == IO_READ) |
| 1978 | et61x251_release_buffers(cam); |
| 1979 | |
| 1980 | err += et61x251_set_pix_format(cam, pix); |
| 1981 | err += et61x251_set_crop(cam, &rect); |
| 1982 | if (s->set_pix_format) |
| 1983 | err += s->set_pix_format(cam, pix); |
| 1984 | if (s->set_crop) |
| 1985 | err += s->set_crop(cam, &rect); |
| 1986 | err += et61x251_set_scale(cam, scale); |
| 1987 | |
| 1988 | if (err) { /* atomic, no rollback in ioctl() */ |
| 1989 | cam->state |= DEV_MISCONFIGURED; |
| 1990 | DBG(1, "VIDIOC_S_FMT failed because of hardware problems. To " |
| 1991 | "use the camera, close and open /dev/video%d again.", |
| 1992 | cam->v4ldev->minor); |
| 1993 | return -EIO; |
| 1994 | } |
| 1995 | |
| 1996 | memcpy(pfmt, pix, sizeof(*pix)); |
| 1997 | memcpy(&(s->_rect), &rect, sizeof(rect)); |
| 1998 | |
| 1999 | if ((cam->module_param.force_munmap || cam->io == IO_READ) && |
| 2000 | nbuffers != et61x251_request_buffers(cam, nbuffers, cam->io)) { |
| 2001 | cam->state |= DEV_MISCONFIGURED; |
| 2002 | DBG(1, "VIDIOC_S_FMT failed because of not enough memory. To " |
| 2003 | "use the camera, close and open /dev/video%d again.", |
| 2004 | cam->v4ldev->minor); |
| 2005 | return -ENOMEM; |
| 2006 | } |
| 2007 | |
| 2008 | if (cam->io == IO_READ) |
| 2009 | et61x251_empty_framequeues(cam); |
| 2010 | else if (cam->module_param.force_munmap) |
| 2011 | et61x251_requeue_outqueue(cam); |
| 2012 | |
| 2013 | cam->stream = stream; |
| 2014 | |
| 2015 | return 0; |
| 2016 | } |
| 2017 | |
| 2018 | |
| 2019 | static int |
| 2020 | et61x251_vidioc_g_jpegcomp(struct et61x251_device* cam, void __user * arg) |
| 2021 | { |
| 2022 | if (copy_to_user(arg, &cam->compression, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2023 | sizeof(cam->compression))) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2024 | return -EFAULT; |
| 2025 | |
| 2026 | return 0; |
| 2027 | } |
| 2028 | |
| 2029 | |
| 2030 | static int |
| 2031 | et61x251_vidioc_s_jpegcomp(struct et61x251_device* cam, void __user * arg) |
| 2032 | { |
| 2033 | struct v4l2_jpegcompression jc; |
| 2034 | const enum et61x251_stream_state stream = cam->stream; |
| 2035 | int err = 0; |
| 2036 | |
| 2037 | if (copy_from_user(&jc, arg, sizeof(jc))) |
| 2038 | return -EFAULT; |
| 2039 | |
| 2040 | if (jc.quality != 0 && jc.quality != 1) |
| 2041 | return -EINVAL; |
| 2042 | |
| 2043 | if (cam->stream == STREAM_ON) |
| 2044 | if ((err = et61x251_stream_interrupt(cam))) |
| 2045 | return err; |
| 2046 | |
| 2047 | err += et61x251_set_compression(cam, &jc); |
| 2048 | if (err) { /* atomic, no rollback in ioctl() */ |
| 2049 | cam->state |= DEV_MISCONFIGURED; |
| 2050 | DBG(1, "VIDIOC_S_JPEGCOMP failed because of hardware " |
| 2051 | "problems. To use the camera, close and open " |
| 2052 | "/dev/video%d again.", cam->v4ldev->minor); |
| 2053 | return -EIO; |
| 2054 | } |
| 2055 | |
| 2056 | cam->compression.quality = jc.quality; |
| 2057 | |
| 2058 | cam->stream = stream; |
| 2059 | |
| 2060 | return 0; |
| 2061 | } |
| 2062 | |
| 2063 | |
| 2064 | static int |
| 2065 | et61x251_vidioc_reqbufs(struct et61x251_device* cam, void __user * arg) |
| 2066 | { |
| 2067 | struct v4l2_requestbuffers rb; |
| 2068 | u32 i; |
| 2069 | int err; |
| 2070 | |
| 2071 | if (copy_from_user(&rb, arg, sizeof(rb))) |
| 2072 | return -EFAULT; |
| 2073 | |
| 2074 | if (rb.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
| 2075 | rb.memory != V4L2_MEMORY_MMAP) |
| 2076 | return -EINVAL; |
| 2077 | |
| 2078 | if (cam->io == IO_READ) { |
| 2079 | DBG(3, "Close and open the device again to choose the mmap " |
| 2080 | "I/O method"); |
| 2081 | return -EINVAL; |
| 2082 | } |
| 2083 | |
| 2084 | for (i = 0; i < cam->nbuffers; i++) |
| 2085 | if (cam->frame[i].vma_use_count) { |
| 2086 | DBG(3, "VIDIOC_REQBUFS failed. " |
| 2087 | "Previous buffers are still mapped."); |
| 2088 | return -EINVAL; |
| 2089 | } |
| 2090 | |
| 2091 | if (cam->stream == STREAM_ON) |
| 2092 | if ((err = et61x251_stream_interrupt(cam))) |
| 2093 | return err; |
| 2094 | |
| 2095 | et61x251_empty_framequeues(cam); |
| 2096 | |
| 2097 | et61x251_release_buffers(cam); |
| 2098 | if (rb.count) |
| 2099 | rb.count = et61x251_request_buffers(cam, rb.count, IO_MMAP); |
| 2100 | |
| 2101 | if (copy_to_user(arg, &rb, sizeof(rb))) { |
| 2102 | et61x251_release_buffers(cam); |
| 2103 | cam->io = IO_NONE; |
| 2104 | return -EFAULT; |
| 2105 | } |
| 2106 | |
| 2107 | cam->io = rb.count ? IO_MMAP : IO_NONE; |
| 2108 | |
| 2109 | return 0; |
| 2110 | } |
| 2111 | |
| 2112 | |
| 2113 | static int |
| 2114 | et61x251_vidioc_querybuf(struct et61x251_device* cam, void __user * arg) |
| 2115 | { |
| 2116 | struct v4l2_buffer b; |
| 2117 | |
| 2118 | if (copy_from_user(&b, arg, sizeof(b))) |
| 2119 | return -EFAULT; |
| 2120 | |
| 2121 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
| 2122 | b.index >= cam->nbuffers || cam->io != IO_MMAP) |
| 2123 | return -EINVAL; |
| 2124 | |
| 2125 | memcpy(&b, &cam->frame[b.index].buf, sizeof(b)); |
| 2126 | |
| 2127 | if (cam->frame[b.index].vma_use_count) |
| 2128 | b.flags |= V4L2_BUF_FLAG_MAPPED; |
| 2129 | |
| 2130 | if (cam->frame[b.index].state == F_DONE) |
| 2131 | b.flags |= V4L2_BUF_FLAG_DONE; |
| 2132 | else if (cam->frame[b.index].state != F_UNUSED) |
| 2133 | b.flags |= V4L2_BUF_FLAG_QUEUED; |
| 2134 | |
| 2135 | if (copy_to_user(arg, &b, sizeof(b))) |
| 2136 | return -EFAULT; |
| 2137 | |
| 2138 | return 0; |
| 2139 | } |
| 2140 | |
| 2141 | |
| 2142 | static int |
| 2143 | et61x251_vidioc_qbuf(struct et61x251_device* cam, void __user * arg) |
| 2144 | { |
| 2145 | struct v4l2_buffer b; |
| 2146 | unsigned long lock_flags; |
| 2147 | |
| 2148 | if (copy_from_user(&b, arg, sizeof(b))) |
| 2149 | return -EFAULT; |
| 2150 | |
| 2151 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
| 2152 | b.index >= cam->nbuffers || cam->io != IO_MMAP) |
| 2153 | return -EINVAL; |
| 2154 | |
| 2155 | if (cam->frame[b.index].state != F_UNUSED) |
| 2156 | return -EINVAL; |
| 2157 | |
| 2158 | cam->frame[b.index].state = F_QUEUED; |
| 2159 | |
| 2160 | spin_lock_irqsave(&cam->queue_lock, lock_flags); |
| 2161 | list_add_tail(&cam->frame[b.index].frame, &cam->inqueue); |
| 2162 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); |
| 2163 | |
| 2164 | PDBGG("Frame #%lu queued", (unsigned long)b.index); |
| 2165 | |
| 2166 | return 0; |
| 2167 | } |
| 2168 | |
| 2169 | |
| 2170 | static int |
| 2171 | et61x251_vidioc_dqbuf(struct et61x251_device* cam, struct file* filp, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2172 | void __user * arg) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2173 | { |
| 2174 | struct v4l2_buffer b; |
| 2175 | struct et61x251_frame_t *f; |
| 2176 | unsigned long lock_flags; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2177 | long timeout; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2178 | |
| 2179 | if (copy_from_user(&b, arg, sizeof(b))) |
| 2180 | return -EFAULT; |
| 2181 | |
| 2182 | if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io!= IO_MMAP) |
| 2183 | return -EINVAL; |
| 2184 | |
| 2185 | if (list_empty(&cam->outqueue)) { |
| 2186 | if (cam->stream == STREAM_OFF) |
| 2187 | return -EINVAL; |
| 2188 | if (filp->f_flags & O_NONBLOCK) |
| 2189 | return -EAGAIN; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2190 | timeout = wait_event_interruptible_timeout |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2191 | ( cam->wait_frame, |
| 2192 | (!list_empty(&cam->outqueue)) || |
| 2193 | (cam->state & DEV_DISCONNECTED) || |
| 2194 | (cam->state & DEV_MISCONFIGURED), |
| 2195 | cam->module_param.frame_timeout * |
| 2196 | 1000 * msecs_to_jiffies(1) ); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2197 | if (timeout < 0) |
| 2198 | return timeout; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2199 | if (cam->state & DEV_DISCONNECTED) |
| 2200 | return -ENODEV; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2201 | if (!timeout || (cam->state & DEV_MISCONFIGURED)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2202 | return -EIO; |
| 2203 | } |
| 2204 | |
| 2205 | spin_lock_irqsave(&cam->queue_lock, lock_flags); |
| 2206 | f = list_entry(cam->outqueue.next, struct et61x251_frame_t, frame); |
| 2207 | list_del(cam->outqueue.next); |
| 2208 | spin_unlock_irqrestore(&cam->queue_lock, lock_flags); |
| 2209 | |
| 2210 | f->state = F_UNUSED; |
| 2211 | |
| 2212 | memcpy(&b, &f->buf, sizeof(b)); |
| 2213 | if (f->vma_use_count) |
| 2214 | b.flags |= V4L2_BUF_FLAG_MAPPED; |
| 2215 | |
| 2216 | if (copy_to_user(arg, &b, sizeof(b))) |
| 2217 | return -EFAULT; |
| 2218 | |
| 2219 | PDBGG("Frame #%lu dequeued", (unsigned long)f->buf.index); |
| 2220 | |
| 2221 | return 0; |
| 2222 | } |
| 2223 | |
| 2224 | |
| 2225 | static int |
| 2226 | et61x251_vidioc_streamon(struct et61x251_device* cam, void __user * arg) |
| 2227 | { |
| 2228 | int type; |
| 2229 | |
| 2230 | if (copy_from_user(&type, arg, sizeof(type))) |
| 2231 | return -EFAULT; |
| 2232 | |
| 2233 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) |
| 2234 | return -EINVAL; |
| 2235 | |
| 2236 | if (list_empty(&cam->inqueue)) |
| 2237 | return -EINVAL; |
| 2238 | |
| 2239 | cam->stream = STREAM_ON; |
| 2240 | |
| 2241 | DBG(3, "Stream on"); |
| 2242 | |
| 2243 | return 0; |
| 2244 | } |
| 2245 | |
| 2246 | |
| 2247 | static int |
| 2248 | et61x251_vidioc_streamoff(struct et61x251_device* cam, void __user * arg) |
| 2249 | { |
| 2250 | int type, err; |
| 2251 | |
| 2252 | if (copy_from_user(&type, arg, sizeof(type))) |
| 2253 | return -EFAULT; |
| 2254 | |
| 2255 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) |
| 2256 | return -EINVAL; |
| 2257 | |
| 2258 | if (cam->stream == STREAM_ON) |
| 2259 | if ((err = et61x251_stream_interrupt(cam))) |
| 2260 | return err; |
| 2261 | |
| 2262 | et61x251_empty_framequeues(cam); |
| 2263 | |
| 2264 | DBG(3, "Stream off"); |
| 2265 | |
| 2266 | return 0; |
| 2267 | } |
| 2268 | |
| 2269 | |
| 2270 | static int |
| 2271 | et61x251_vidioc_g_parm(struct et61x251_device* cam, void __user * arg) |
| 2272 | { |
| 2273 | struct v4l2_streamparm sp; |
| 2274 | |
| 2275 | if (copy_from_user(&sp, arg, sizeof(sp))) |
| 2276 | return -EFAULT; |
| 2277 | |
| 2278 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 2279 | return -EINVAL; |
| 2280 | |
| 2281 | sp.parm.capture.extendedmode = 0; |
| 2282 | sp.parm.capture.readbuffers = cam->nreadbuffers; |
| 2283 | |
| 2284 | if (copy_to_user(arg, &sp, sizeof(sp))) |
| 2285 | return -EFAULT; |
| 2286 | |
| 2287 | return 0; |
| 2288 | } |
| 2289 | |
| 2290 | |
| 2291 | static int |
| 2292 | et61x251_vidioc_s_parm(struct et61x251_device* cam, void __user * arg) |
| 2293 | { |
| 2294 | struct v4l2_streamparm sp; |
| 2295 | |
| 2296 | if (copy_from_user(&sp, arg, sizeof(sp))) |
| 2297 | return -EFAULT; |
| 2298 | |
| 2299 | if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 2300 | return -EINVAL; |
| 2301 | |
| 2302 | sp.parm.capture.extendedmode = 0; |
| 2303 | |
| 2304 | if (sp.parm.capture.readbuffers == 0) |
| 2305 | sp.parm.capture.readbuffers = cam->nreadbuffers; |
| 2306 | |
| 2307 | if (sp.parm.capture.readbuffers > ET61X251_MAX_FRAMES) |
| 2308 | sp.parm.capture.readbuffers = ET61X251_MAX_FRAMES; |
| 2309 | |
| 2310 | if (copy_to_user(arg, &sp, sizeof(sp))) |
| 2311 | return -EFAULT; |
| 2312 | |
| 2313 | cam->nreadbuffers = sp.parm.capture.readbuffers; |
| 2314 | |
| 2315 | return 0; |
| 2316 | } |
| 2317 | |
| 2318 | |
| 2319 | static int et61x251_ioctl_v4l2(struct inode* inode, struct file* filp, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2320 | unsigned int cmd, void __user * arg) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2321 | { |
| 2322 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); |
| 2323 | |
| 2324 | switch (cmd) { |
| 2325 | |
| 2326 | case VIDIOC_QUERYCAP: |
| 2327 | return et61x251_vidioc_querycap(cam, arg); |
| 2328 | |
| 2329 | case VIDIOC_ENUMINPUT: |
| 2330 | return et61x251_vidioc_enuminput(cam, arg); |
| 2331 | |
| 2332 | case VIDIOC_G_INPUT: |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2333 | return et61x251_vidioc_g_input(cam, arg); |
| 2334 | |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2335 | case VIDIOC_S_INPUT: |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2336 | return et61x251_vidioc_s_input(cam, arg); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2337 | |
| 2338 | case VIDIOC_QUERYCTRL: |
| 2339 | return et61x251_vidioc_query_ctrl(cam, arg); |
| 2340 | |
| 2341 | case VIDIOC_G_CTRL: |
| 2342 | return et61x251_vidioc_g_ctrl(cam, arg); |
| 2343 | |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2344 | case VIDIOC_S_CTRL: |
| 2345 | return et61x251_vidioc_s_ctrl(cam, arg); |
| 2346 | |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2347 | case VIDIOC_CROPCAP: |
| 2348 | return et61x251_vidioc_cropcap(cam, arg); |
| 2349 | |
| 2350 | case VIDIOC_G_CROP: |
| 2351 | return et61x251_vidioc_g_crop(cam, arg); |
| 2352 | |
| 2353 | case VIDIOC_S_CROP: |
| 2354 | return et61x251_vidioc_s_crop(cam, arg); |
| 2355 | |
| 2356 | case VIDIOC_ENUM_FMT: |
| 2357 | return et61x251_vidioc_enum_fmt(cam, arg); |
| 2358 | |
| 2359 | case VIDIOC_G_FMT: |
| 2360 | return et61x251_vidioc_g_fmt(cam, arg); |
| 2361 | |
| 2362 | case VIDIOC_TRY_FMT: |
| 2363 | case VIDIOC_S_FMT: |
| 2364 | return et61x251_vidioc_try_s_fmt(cam, cmd, arg); |
| 2365 | |
| 2366 | case VIDIOC_G_JPEGCOMP: |
| 2367 | return et61x251_vidioc_g_jpegcomp(cam, arg); |
| 2368 | |
| 2369 | case VIDIOC_S_JPEGCOMP: |
| 2370 | return et61x251_vidioc_s_jpegcomp(cam, arg); |
| 2371 | |
| 2372 | case VIDIOC_REQBUFS: |
| 2373 | return et61x251_vidioc_reqbufs(cam, arg); |
| 2374 | |
| 2375 | case VIDIOC_QUERYBUF: |
| 2376 | return et61x251_vidioc_querybuf(cam, arg); |
| 2377 | |
| 2378 | case VIDIOC_QBUF: |
| 2379 | return et61x251_vidioc_qbuf(cam, arg); |
| 2380 | |
| 2381 | case VIDIOC_DQBUF: |
| 2382 | return et61x251_vidioc_dqbuf(cam, filp, arg); |
| 2383 | |
| 2384 | case VIDIOC_STREAMON: |
| 2385 | return et61x251_vidioc_streamon(cam, arg); |
| 2386 | |
| 2387 | case VIDIOC_STREAMOFF: |
| 2388 | return et61x251_vidioc_streamoff(cam, arg); |
| 2389 | |
| 2390 | case VIDIOC_G_PARM: |
| 2391 | return et61x251_vidioc_g_parm(cam, arg); |
| 2392 | |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2393 | case VIDIOC_S_PARM: |
| 2394 | return et61x251_vidioc_s_parm(cam, arg); |
| 2395 | |
| 2396 | case VIDIOC_G_STD: |
| 2397 | case VIDIOC_S_STD: |
| 2398 | case VIDIOC_QUERYSTD: |
| 2399 | case VIDIOC_ENUMSTD: |
| 2400 | case VIDIOC_QUERYMENU: |
| 2401 | return -EINVAL; |
| 2402 | |
| 2403 | default: |
| 2404 | return -EINVAL; |
| 2405 | |
| 2406 | } |
| 2407 | } |
| 2408 | |
| 2409 | |
| 2410 | static int et61x251_ioctl(struct inode* inode, struct file* filp, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2411 | unsigned int cmd, unsigned long arg) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2412 | { |
| 2413 | struct et61x251_device* cam = video_get_drvdata(video_devdata(filp)); |
| 2414 | int err = 0; |
| 2415 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2416 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2417 | return -ERESTARTSYS; |
| 2418 | |
| 2419 | if (cam->state & DEV_DISCONNECTED) { |
| 2420 | DBG(1, "Device not present"); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2421 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2422 | return -ENODEV; |
| 2423 | } |
| 2424 | |
| 2425 | if (cam->state & DEV_MISCONFIGURED) { |
| 2426 | DBG(1, "The camera is misconfigured. Close and open it " |
| 2427 | "again."); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2428 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2429 | return -EIO; |
| 2430 | } |
| 2431 | |
| 2432 | V4LDBG(3, "et61x251", cmd); |
| 2433 | |
| 2434 | err = et61x251_ioctl_v4l2(inode, filp, cmd, (void __user *)arg); |
| 2435 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2436 | mutex_unlock(&cam->fileop_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2437 | |
| 2438 | return err; |
| 2439 | } |
| 2440 | |
| 2441 | |
| 2442 | static struct file_operations et61x251_fops = { |
| 2443 | .owner = THIS_MODULE, |
| 2444 | .open = et61x251_open, |
| 2445 | .release = et61x251_release, |
| 2446 | .ioctl = et61x251_ioctl, |
| 2447 | .read = et61x251_read, |
| 2448 | .poll = et61x251_poll, |
| 2449 | .mmap = et61x251_mmap, |
| 2450 | .llseek = no_llseek, |
| 2451 | }; |
| 2452 | |
| 2453 | /*****************************************************************************/ |
| 2454 | |
| 2455 | /* It exists a single interface only. We do not need to validate anything. */ |
| 2456 | static int |
| 2457 | et61x251_usb_probe(struct usb_interface* intf, const struct usb_device_id* id) |
| 2458 | { |
| 2459 | struct usb_device *udev = interface_to_usbdev(intf); |
| 2460 | struct et61x251_device* cam; |
| 2461 | static unsigned int dev_nr = 0; |
| 2462 | unsigned int i; |
| 2463 | int err = 0; |
| 2464 | |
| 2465 | if (!(cam = kzalloc(sizeof(struct et61x251_device), GFP_KERNEL))) |
| 2466 | return -ENOMEM; |
| 2467 | |
| 2468 | cam->usbdev = udev; |
| 2469 | |
| 2470 | if (!(cam->control_buffer = kzalloc(8, GFP_KERNEL))) { |
| 2471 | DBG(1, "kmalloc() failed"); |
| 2472 | err = -ENOMEM; |
| 2473 | goto fail; |
| 2474 | } |
| 2475 | |
| 2476 | if (!(cam->v4ldev = video_device_alloc())) { |
| 2477 | DBG(1, "video_device_alloc() failed"); |
| 2478 | err = -ENOMEM; |
| 2479 | goto fail; |
| 2480 | } |
| 2481 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2482 | mutex_init(&cam->dev_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2483 | |
| 2484 | DBG(2, "ET61X[12]51 PC Camera Controller detected " |
| 2485 | "(vid/pid 0x%04X/0x%04X)",id->idVendor, id->idProduct); |
| 2486 | |
| 2487 | for (i = 0; et61x251_sensor_table[i]; i++) { |
| 2488 | err = et61x251_sensor_table[i](cam); |
| 2489 | if (!err) |
| 2490 | break; |
| 2491 | } |
| 2492 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2493 | if (!err) |
| 2494 | DBG(2, "%s image sensor detected", cam->sensor.name); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2495 | else { |
| 2496 | DBG(1, "No supported image sensor detected"); |
| 2497 | err = -ENODEV; |
| 2498 | goto fail; |
| 2499 | } |
| 2500 | |
| 2501 | if (et61x251_init(cam)) { |
| 2502 | DBG(1, "Initialization failed. I will retry on open()."); |
| 2503 | cam->state |= DEV_MISCONFIGURED; |
| 2504 | } |
| 2505 | |
| 2506 | strcpy(cam->v4ldev->name, "ET61X[12]51 PC Camera"); |
| 2507 | cam->v4ldev->owner = THIS_MODULE; |
| 2508 | cam->v4ldev->type = VID_TYPE_CAPTURE | VID_TYPE_SCALES; |
| 2509 | cam->v4ldev->hardware = 0; |
| 2510 | cam->v4ldev->fops = &et61x251_fops; |
| 2511 | cam->v4ldev->minor = video_nr[dev_nr]; |
| 2512 | cam->v4ldev->release = video_device_release; |
| 2513 | video_set_drvdata(cam->v4ldev, cam); |
| 2514 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2515 | mutex_lock(&cam->dev_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2516 | |
| 2517 | err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2518 | video_nr[dev_nr]); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2519 | if (err) { |
| 2520 | DBG(1, "V4L2 device registration failed"); |
| 2521 | if (err == -ENFILE && video_nr[dev_nr] == -1) |
| 2522 | DBG(1, "Free /dev/videoX node not found"); |
| 2523 | video_nr[dev_nr] = -1; |
| 2524 | dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2525 | mutex_unlock(&cam->dev_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2526 | goto fail; |
| 2527 | } |
| 2528 | |
| 2529 | DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->minor); |
| 2530 | |
| 2531 | cam->module_param.force_munmap = force_munmap[dev_nr]; |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2532 | cam->module_param.frame_timeout = frame_timeout[dev_nr]; |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2533 | |
| 2534 | dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0; |
| 2535 | |
| 2536 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 2537 | et61x251_create_sysfs(cam); |
| 2538 | DBG(2, "Optional device control through 'sysfs' interface ready"); |
| 2539 | #endif |
| 2540 | |
| 2541 | usb_set_intfdata(intf, cam); |
| 2542 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2543 | mutex_unlock(&cam->dev_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2544 | |
| 2545 | return 0; |
| 2546 | |
| 2547 | fail: |
| 2548 | if (cam) { |
| 2549 | kfree(cam->control_buffer); |
| 2550 | if (cam->v4ldev) |
| 2551 | video_device_release(cam->v4ldev); |
| 2552 | kfree(cam); |
| 2553 | } |
| 2554 | return err; |
| 2555 | } |
| 2556 | |
| 2557 | |
| 2558 | static void et61x251_usb_disconnect(struct usb_interface* intf) |
| 2559 | { |
| 2560 | struct et61x251_device* cam = usb_get_intfdata(intf); |
| 2561 | |
| 2562 | if (!cam) |
| 2563 | return; |
| 2564 | |
| 2565 | down_write(&et61x251_disconnect); |
| 2566 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2567 | mutex_lock(&cam->dev_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2568 | |
| 2569 | DBG(2, "Disconnecting %s...", cam->v4ldev->name); |
| 2570 | |
| 2571 | wake_up_interruptible_all(&cam->open); |
| 2572 | |
| 2573 | if (cam->users) { |
| 2574 | DBG(2, "Device /dev/video%d is open! Deregistration and " |
| 2575 | "memory deallocation are deferred on close.", |
| 2576 | cam->v4ldev->minor); |
| 2577 | cam->state |= DEV_MISCONFIGURED; |
| 2578 | et61x251_stop_transfer(cam); |
| 2579 | cam->state |= DEV_DISCONNECTED; |
| 2580 | wake_up_interruptible(&cam->wait_frame); |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2581 | wake_up(&cam->wait_stream); |
| 2582 | usb_get_dev(cam->usbdev); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2583 | } else { |
| 2584 | cam->state |= DEV_DISCONNECTED; |
| 2585 | et61x251_release_resources(cam); |
| 2586 | } |
| 2587 | |
Luca Risolia | ccad778 | 2006-02-25 06:54:18 +0000 | [diff] [blame] | 2588 | mutex_unlock(&cam->dev_mutex); |
Luca Risolia | 7ce08c9 | 2006-01-11 02:06:59 +0000 | [diff] [blame] | 2589 | |
| 2590 | if (!cam->users) |
| 2591 | kfree(cam); |
| 2592 | |
| 2593 | up_write(&et61x251_disconnect); |
| 2594 | } |
| 2595 | |
| 2596 | |
| 2597 | static struct usb_driver et61x251_usb_driver = { |
| 2598 | .name = "et61x251", |
| 2599 | .id_table = et61x251_id_table, |
| 2600 | .probe = et61x251_usb_probe, |
| 2601 | .disconnect = et61x251_usb_disconnect, |
| 2602 | }; |
| 2603 | |
| 2604 | /*****************************************************************************/ |
| 2605 | |
| 2606 | static int __init et61x251_module_init(void) |
| 2607 | { |
| 2608 | int err = 0; |
| 2609 | |
| 2610 | KDBG(2, ET61X251_MODULE_NAME " v" ET61X251_MODULE_VERSION); |
| 2611 | KDBG(3, ET61X251_MODULE_AUTHOR); |
| 2612 | |
| 2613 | if ((err = usb_register(&et61x251_usb_driver))) |
| 2614 | KDBG(1, "usb_register() failed"); |
| 2615 | |
| 2616 | return err; |
| 2617 | } |
| 2618 | |
| 2619 | |
| 2620 | static void __exit et61x251_module_exit(void) |
| 2621 | { |
| 2622 | usb_deregister(&et61x251_usb_driver); |
| 2623 | } |
| 2624 | |
| 2625 | |
| 2626 | module_init(et61x251_module_init); |
| 2627 | module_exit(et61x251_module_exit); |